Chapter II: Part 2

Undoubtedly the best known instrument maker in Massachusetts was Joseph Pope (1750-1826), of Boston, who was described by contemporaries as the "local mathematician, watch-maker and mechanical genius." In 1787 he completed the construction of a gear-driven orrery displaying the motions of the solar system in a horizontal plane with eccentric and inclined orbits. At each of the twelve corners were mounted cast bronze figures, claimed to have been carved in wood by Simeon Skillin and cast in bronze by Paul Revere. Although the instrument was made for Harvard, the university lacked funds for its purchase. Accordingly, it held a public lottery which realized a substantial sum in excess of the L450.3.0 paid to Pope, and the orrery was delivered in December 1788.[35] The orrery (fig. 18) has survived and is part of the collection of historical scientific instruments at Harvard University.

According to a statement in the _Boston Gazette_ for February 16, 1789, an apparatus for displaying planets in their proper orbits by means of wires was made and exhibited in Boston by Bartholomew Burges.

Mention must also be made of several members of the Folger family of Nantucket, Massachusetts. Peter Folger (1617-1690), founder of the American branch of the family, emigrated from Norfolk, England, in 1635 and occupied himself in Nantucket as blacksmith, schoolmaster, watchmaker, and surveyor. He was a grandfather of Benjamin Franklin. Another notable descendant was Maria Mitchell (1818-1889), professor of astronomy and director of the observatory at Vassar College.

The best known member of the family was Walter Folger, Jr. (1765-1849), a self-taught clockmaker and watchmaker with great interest in the sciences. A telescope that he produced about 1818 was considered to be the finest in the country at that time. His greatest achievement was a tall case astronomical clock that he devised and constructed; it was completed in 1790 and is considered to be the most complicated domestic clock on record.[36] Folger also produced quadrants and compasses, and made astronomical observations. His observations of the solar eclipse of September 17, 1811, were published in 1815 in _Memoirs of the Academy of Arts and Sciences_.

Probably one of the most significant of the surviving early American scientific instruments is a pair of gunners' calipers made and used by PAUL REVERE (1735-1818) of Boston. The calipers are made of incised brass, measuring 7 inches in length and 1-3/4 inches in width. They are signed on the reverse side with the name "Revere" in the style of script signature used by this maker in many of his engravings. The design of the instrument is substantially different from that which is commonly found in English, French, and German gunners' calipers of the period, and was probably Revere's own. (See figs. 19, 20.)

It is believed that these calipers, which are preserved in the collection of the Bostonian Society in Boston, were probably used by Revere in 1775-1776. This was the period during which he was in charge of ordnance repairs for the Continental Army, and involved in various ventures for the manufacture of gunpowder and the casting of cannon. There is no evidence of other scientific instruments made by Revere, lending some weight to the belief that these calipers were made for his own use.

Other Massachusetts instrument makers include Gideon Fairman (1774-1827) of Newburyport who was a partner of William Hooker in the firm of Hooker & Fairman, which dealt in mathematical instruments before 1810.[37] Fairman later moved to Philadelphia, where he was associated with the engraving firm of Draper, Murray & Fairman.

At the end of the 18th century Samuel Emery was making mathematical instruments in Salem, at the same time that John Jayne was engaged in the same work in that community.[38]

John Potter of Brookfield, Massachusetts, produced surveying instruments in the last quarter of the 18th century. A graphometer signed with his name and dated 1785 is in the collection of the firm of W. & L. E. Gurley in Troy, New York.

_Rhode Island_

One of the earliest and most important of the instrument makers of Rhode Island was Benjamin King (1707-1786), of Newport. He was the son of Capt. Samuel King of Salem, Massachusetts, where he was born and baptized on March 13, 1707. He was a brother of Daniel King of Salem. Benjamin eventually moved to Newport, where he married Mary Hagger in July 1742. They had four children: Benjamin, Mehitable, Samuel, and Mary. He established himself as a respectable businessman in the community, and in 1759 or 1760 he became the senior partner in the importing and retailing firm of King & Hagger, "near the sign of Mr. Pitt," dealing in general merchandise, mathematical and nautical instruments, and stationery. William Hagger was probably the junior partner, and may have been King's brother-in-law. King began making his own instruments for sale, surviving examples dated as early as 1762. The partnership was dissolved early in the 1760's. In 1766 Benjamin King was importing, making, and selling quadrants and other instruments "At the Sign of the Mathematical Instruments" next to the Golden Eagle on Thames Street. His son Samuel King occupied the same premises, where he dealt in paints and artists supplies.

When the British occupied Newport, King moved to North Kingstown, but he returned after the British vacated the city. He was 79 when he died in 1786, and his son Samuel King succeeded him in business.[39]

William Guyse Hagger (c. 1744-1830?), born in Newport, is believed to have been the son of William Hagar and Mary Knowlton. He was a quadrant maker (see fig. 21). In 1774 he headed a household that consisted of his wife, five children, and a colored servant. Whether it was he or his father who was the partner of Benjamin King cannot be determined with certainty. When Newport was occupied by the British, Hagger moved to Cranston, where he joined the Pawtuxet Rangers and served as a sentinel at Pawtuxet Fort in 1778. No members of the Hagger family appear in the 1790 census of Newport, but a William Hager is reported as having died in Boston in 1830 at the age of 82. It seems likely from the age and dates that it was William Hagger the elder who worked as a partner in the firm of King & Hagger, which was established in 1759 or 1760.[40]

Another instrument maker of Rhode Island was William Hamlin (1772-1869). He had established himself in Providence by the beginning of the 19th century in the manufacturing and repairing of mathematical and nautical instruments, for which there was an active market in that city. Hamlin was one of the first engravers in America and the first in Rhode Island. He designed and engraved banknotes for many banks in the State and for other institutions. At the same time he carried on a general trade in the sale of musical instruments. Hamlin moved his shop several times, but from 1847 until his death he worked at "The Sign of the Quadrant" (see fig. 22) at 131 South Water Street. He was equally interested in optics and astronomy, and it has been claimed that he constructed the first telescope in America. It is well established that he worked for many years to perfect a reflecting telescope for his own use.[41]

Instruments were made also by Paul Pease, who may have been the husband of the daughter of Nathaniel Folger of Nantucket. This Elizabeth Folger Pease, wife of a Paul Pease, was born in 1720 and died in 1795. Little is known about Pease except for the name "Paul Pease 1750" inscribed on a quadrant in the collection of the Rhode Island Historical Society.[42]

_Connecticut_

The clockmakers who worked in Connecticut during the span of the 18th century numbered almost a hundred. Yet only a half dozen appear on record to have made or sold instruments in addition to clocks. Among these were several members of the Doolittle family, including Isaac Doolittle (1721-1800) of New Haven. In 1763 he advertised that he sold surveying compasses in addition to clocks, watches, bar iron, and chocolate.[43] His son Isaac Doolittle, Jr. (1759-1821), also of New Haven, established a shop of his own, which he advertised in 1781 as having

Compasses of all kinds, both for sea and land, surveyors scales,
and protractors, gauging rods, walking sticks, silver and plated
buttons, turned upon horn; also clocks and watches made and
repaired ...[44]

Although not very active as a clockmaker, Isaac Jr. appears to have specialized more in the production of surveying and nautical instruments. He took over his father's business just before the latter's death, and in 1799 he advertised[45]:

The subscriber having commenced business at the shop lately
occupied by Mr. Isaac Doolittle, in Chapel Street, where he repairs
watches, makes and repairs Surveyors Compasses and Chains, Brass
Amplitude, plain brass and common Ship's Compasses, Gauging Rods,
Quadrants, repair'd &c. every favor gratefully received by the
public's humble servant, Isaac Doolittle, jun.

Enos Doolittle (1751-1806), a nephew of Isaac Doolittle, Sr., made, sold, cleaned, and repaired clocks and surveying and marine compasses from 1772 through 1788 at his shop in Hartford. He also sold these items through agents in Saybrook and Middleton.[46]

One of the best known of the Connecticut clockmakers was Peregrine White (1747-1834), of Woodstock. White was a descendant of the first Pilgrim child, and a native of Boston. After serving an apprenticeship, he worked as a clockmaker and silversmith in Boston. He was accused of forging silver spoons and left the city to settle in Woodstock. He established his own shop west of Muddy Brook Village.[47] In addition to fine tall-case clocks, for which he was noted, White also produced surveying compasses, one of which is in the collection of the U.S. National Museum (fig. 23). A similar specimen in Old Sturbridge Village is reputed to have been used for surveying the town of Southbridge, Mass.

Benjamin Hanks (1755-1824), of Mansfield and Litchfield, inserted a notice in a newspaper in 1808 to notify the public that he and his son Truman Hanks, in partnership, had "surveyors compasses upon the Rittenhouse improved plan" in addition to such other commodities as brass cannon, bells from their own foundry, clocks, goldsmith's items, and stocking looms.[48]

Ziba Blakslee (1768-1834), of Newton, worked as a clockmaker, goldsmith, and bell founder and he advertised that he made and sold surveying instruments.[49]

In New Haven, Clark Sibley and Simeon Marble organized the firm of Sibley & Marble and advertised that in addition to repairing swords and cutlasses, clocks and watches, they also repaired mathematical and surgical instruments.[50]

One of the instrument makers of New England who has remained relatively unknown was Benjamin Platt (1757-1833), who was born in Danbury, Connecticut, on January 3, 1757.[51] He married Adah Fairchild of the same city in 1776, and it is believed that he must have completed his apprenticeship by that date inasmuch as apprentices usually were not allowed to marry.

It is not known how long Platt worked in his native city, but by 1780 he had moved to Litchfield, where he worked in gold, silver, and brass. He became established as a clockmaker and produced tall case clocks and other types. In 1787 he was in New Milford, a town adjacent to Danbury, where he produced surveying compasses (see fig. 24). Three years later, in 1790, he was at Milford, where he invented a "Compass for measuring distance in hilly country." In 1793 he returned to New Milford, where he made a clock to order for Eli Todd, and by 1800 he had moved to Lanesboro, Massachusetts.

_Ohio_

Benjamin Platt was the migratory type. In 1817 he migrated from Lanesboro to Columbus, Ohio. His son, Augustus Platt (1793-1886), also made mathematical instruments (see fig. 25) in Columbus. In 1809 a grandson, named William Augustus Platt was born. When the child's mother died, Benjamin and Adah Platt adopted the boy, and when he came of age he went into the watchmaking trade. William Platt married Fanny Hayes, sister of President Hayes.[52] His shop was listed in the 1843 city directory; it was the first jewelry and clock and watch store in the community.

An interesting account of instrument making in Ohio is found in the report of a missionary, John Heckewelder. He mentioned the brothers Joseph and Francois Devacht who worked as watchmakers and instrument makers in Gallipolis, Ohio. Writing in 1792, Heckewelder stated that "the most interesting shops of the Workmen [in Gallipolis] were those of the Goldsmiths and Watchmakers. They showed us work on watches, compasses, sundials finer than I have ever beheld."

_New York_

There were relatively few makers of mathematical instruments in New York City before the end of the 18th century. Perhaps the earliest was John Bailey, who moved from Fredericksburg, Virginia, to Fishkill, New York, in 1778. He was a cutler by trade, and he made and sold surgical instruments.[53]

"Bulmain & Dennies" at 59 Water Street in New York were the appointed agents to sell the "Perpetual Log or Distance Clock to find a ship's way at sea." The device had been patented in the United States, and one of the instruments was displayed at the bar of the Tontine Coffee House, according to an advertisement in the July 23, 1799, issue of the _New York Gazette and General Advertiser_.

H. Caritat, at 153 Broadway in New York, imported and sold "The Planispherical Planetarium." This item was described in an advertisement[54] as "a graphic representation of the earth, in twelve particular positions during its revolutionary course around the sun, as also of the Moon's revolution around the earth, together with literal description of parts and motions, etc." The advertisement also stated that Caritat sold "Carey's newly improved Terrestrial and Celestial Globes which omitted the Constellary Configurations."

In 1785 M. Morris of New York City made and sold his own invention of a "Nautical Protractor for the price of One Dollar." In an advertisement in _The Independent Journal or the General Advertiser_ of May 25, 1785, he explained that the device was for use in the construction of globular maps and Mercator charts. He also made another protractor for attaching to the end of a ruler for measuring distances on charts. He planned to publish a treatise on the subject of his inventions.

James Youle, a cutler and mechanician with a shop located first on Fly Street and then at 64 Water Street "at the Sign of the Cross-Knives and Gun," sold a large variety of cutlery and hardware for gun repair. He also made surgical instruments. He died in February 1786 at the age of 46 as the result of an injury to his chest from a breaking grindstone while working in his shop. He was survived by a widow and nine children and was succeeded in business by his son John Youle.[55]

_New Jersey_

One of the few instrument makers known to have worked in New Jersey was Aaron Miller of "Elizabeth-town." He was first noted in the New York newspapers in 1748 when he notified the public that, in addition to clocks, he made compasses, chains for surveyors, and church bells, for which he maintained his own foundry. When he died in 1771 he left all his tools to a son-in-law, Isaac Brokaw.[56]

Another craftsman who is entitled to being included as an instrument maker was Richard Wistar. When Casper Wistar died in 1752, his son Richard succeeded him as owner of the famous glass works. In addition to window glass and glassware, Richard Wistar also produced such special products as retorts for use in chemistry and "electerizing globes and tubes," as well as bottles for Leyden jars that Benjamin Franklin had urged him to attempt in the early 1750's.[57]

_Delaware_

George Crow (ca. 1725-1771/72) of Wilmington, Delaware, was apparently well established as a clockmaker in the community by the time of his marriage in 1746 to Mary Laudonet. They had four children, and Crow's two sons followed his trade. George Crow was active in civic affairs, and in addition to clocks, he produced surveying compasses, several of which have survived.[58]

_Maryland and Virginia_

Brief mention has already been made of the Chandlee family of clockmakers and instrument makers of the 18th century. The founder of the line and first of interest was Benjamin Chandlee, Sr., who migrated in 1702 from Ireland to Philadelphia, where he was apprenticed to Abel Cottey, clockmaker, and eventually married his daughter. His son Benjamin Chandlee, Jr. (1723-1791), worked as a clockmaker in Nottingham, Maryland, where he produced instruments as well as clocks. A fine example of a brass surveying compass--inscribed with his name, and which is believed to have been made for the Gilpin family in about 1761--is on exhibition in the Chester County Historical Society. He had four sons, and a few years before his death he established the firm of Chandlee & Sons, the name of which was changed to Ellis Chandlee & Brothers a year before he died.

The oldest of Benjamin Jr.'s four sons was Goldsmith Chandlee (c.1746-1821). After serving an apprenticeship with his father, Goldsmith moved to Virginia and worked near Stephensburg (now Stephens City). He eventually established himself at Winchester and built a brass foundry and a shop where he produced clocks, surveying compasses, sundials, apothecary and money scales, surgical instruments, compasses, telescopes, and other items in metal. Numerous examples of his clocks and instruments have survived. Their fine quality attests to the claim that he was one of the foremost craftsmen of the 18th century. Several of his surveying compasses exist in modern collections. An instrument (fig. 26) that he made about 1794 for a surveyor named Robert Lyle is in the writer's collection; an almost identical instrument that Chandlee made for Lawrence Augustine Washington, George Washington's nephew, is exhibited in the library at Mount Vernon, Virginia.

Ellis Chandlee (1755-1816) also was apprenticed to his father, and he worked with his brothers in the shop. He established the firm of Ellis Chandlee & Brothers, in 1790, shortly before his father's death. The firm was dissolved in 1797 when the youngest brother, John Chandlee, left the firm. Ellis continued in partnership with his other brother, Isaac Chandlee (1760-1813), until about 1804, producing clocks, surveying instruments, and other metal articles. Their products were signed "Ellis and Isaac Chandlee, Nottingham," or, in the case of a surveying compass in the collection of the Chester County Historical Society, "E. & I. Chandlee, Nottingham." Isaac Chandlee also produced clocks and instruments under his own name only, for there are a number of surviving clocks and surveying compasses signed in such manner (see fig. 28).[59]

One of the most important craftsmen of Maryland was Frederick A. Heisely (1759-1839). A native of Lancaster, Pennsylvania, he served an apprenticeship there with John Hoff, the master clockmaker, from 1777 to 1783. Heisely served in the Revolution. In 1783, presumably upon the completion of his apprenticeship, he married Catherine Hoff, the clockmaker's daughter. He moved to Frederick, Maryland, where he established his own clockmaking shop and where he specialized in making mathematical instruments. A tower clock made in Frederick is in the collection of the U.S. National Museum. Heisely returned to Lancaster to become Hoff's partner, and worked with him until 1802. He then moved his shop to Harrisburg and worked there until 1820. He moved once more, this time to Pittsburgh where he advertised himself as a "Clock, Watch and Instrument Maker," with a shop at No. 6 St. Clair Street.

George Heisely (1789-1880), Frederick's son, who was born at Frederick, Maryland, achieved note in his own right as a maker of clocks and instruments. He worked at Second and Walnut Streets in Harrisburg. He is credited with being the person who selected the melody of "To Anacreon in Heaven" for "The Star-Spangled Banner," while he was serving as a member of the Pennsylvania State Militia.[60]

_Pennsylvania_

A number of instrument makers worked in Philadelphia, which was one of the important shipping centers during the 18th century and consequently one of the important markets for nautical instruments.

Probably the earliest Philadelphia instrument maker of record was Thomas Godfrey (1704-1749) who was born in Bristol Township. After serving an apprenticeship, Godfrey developed his own business as a glazier and plumber. He is stated to have done the major part of the glazing of the State House in 1732, as well as similar work on Christ Church. He also worked for Andrew Hamilton and for James Logan.

Godfrey had a natural inclination and interest in science and mathematics, which may have been further encouraged by his friendship with Benjamin Franklin, who resided in the same house. Godfrey was also a fellow member of Franklin's Junto.

In 1730 Godfrey invented an improved backstaff or Davis quadrant, and loaned the instrument to Joshua Fisher to be used in the latter's survey of Delaware Bay. It is claimed that the location of Cape Henlopen was established on Fisher's map (published in London in 1756) by means of Godfrey's instrument. James Logan became interested in the improved backstaff invented by Godfrey and at Logan's request, the instrument was taken on a voyage to the West Indies by a Captain Wright for the purpose of testing it.[61]

At the same time Logan sent a description of the instrument to London to the Royal Astronomer, Edmund Halley. No acknowledgment was made, and in 1734 Logan sent a second description to Sir Hans Sloane and to Peter Collison for forwarding to the Royal Society. The arrival of this description coincided with the submission of the description of a similar instrument to the Society by its vice president, James Hadley. The Royal Society decided in favor of both inventors, and Godfrey was awarded the equivalent of 200 pounds in household furniture.

Godfrey is often confused with his son, also named Thomas Godfrey (1736-1763), who worked as a watchmaker in Philadelphia, and subsequently became active in literary arts.

Benjamin Condy (fl. 1756-1792, d. 1798) was an instrument maker with a shop on South Front Street in Philadelphia. As early as 1756 he worked for most of the merchant shippers of the port, supplying them with a considerable number of sand glasses that ranged from the quarter-minute to the two-hour varieties. Although he made his own mathematical instruments, it is likely that he imported the sand glasses. According to Customs House clearances of 1789, he had imported from London on the ship _Pigou_ "three cases of merchandise" valued at L160/17/6 with a duty of $32.19, which may have included sand glasses.[62]

When Condy retired in 1792 he was succeeded in business by Thomas Biggs at the same address. Biggs had originally served an apprenticeship with Condy, and then fought for the American cause in the Revolution for five years. Following the termination of his military service he had engaged in instrument making in New York for eight years before returning to Philadelphia, his native city. Biggs prospered and his advertisements continued until early in 1795.

Thomas Pryor made instruments in a shop on Chestnut Street in 1778, but he evidently retired from business in the 1790's because the city directory of 1795 listed him merely as "gentleman." He is reported to have been one of those who, from the State House Yard, witnessed the transit of Venus.[63]

Among the early makers of mathematical instruments in Philadelphia was William Dean (?-1797), who is believed to have been working in that city as early as 1778. His name first appears in local directories in June 1792, where his shop address was listed as No. 43 South Front Street. Later he advertised that he made and sold "Surveying instruments--Telescopes, Sextants, Quadrants--and every article requisite for navigation, surveying, levelling, &c...."

According to details which were noted in his last will, which was dated June 1, 1797, and filed and proved in the following month, Dean's death appears to have been preceded by a long illness. He designated his two sisters as his executrices, and the fact that his will specified the appointment of a Mr. Thomas Yardley, Jr., as guardian of his three children indicates that he may have been a widower at the time of his death.

A surveying compass by this maker was recently brought to light in, the Clark County Historical Society, Springfield, Ohio, by Dr. Donald A. Hutzlar of the Ohio State Museum. The instrument is a plain compass in brass without levels, 13-1/2 inches in length, and with a 5-inch needle. The dial is marked "DEAN PHILAD^a." The wooden cover for the instrument is marked with the names of previous owners and dates, as follows:

Jno. C. Symes, Aug. 10, 1778
I. Ludlow, 1791
Henry Donnel, July 24, 1794
Jonathan Donnel, 1796
John Dyherty
Thomas J. Kizer, 1838
David J. Kizer, '78.

A description of this instrument in "_The History of Clark County, Ohio_" by A. P. Steele, published in 1881 by the W. H. Beers Co. of Chicago, adds considerably to its interest as a historical record of American scientific instruments and their use: "Col. Thomas Kizer, the veteran surveyor, has in his possession a compass made by Dean of Philadelphia; this instrument was owned and used by his father, David Kizer, who obtained it from John Dougherty about 1813; Dougherty got it from Jonathan Donnel. This relic is marked I. Ludlow, 1791; Henry Donnel, 1794; J. Donnel, 1796, John Dougherty, 1799; these marks are rudely scratched upon the cover of the instrument, and bear every evidence of being genuine; there is no doubt but that this old compass was used in making the first surveys in this county, or that it is the identical instrument used by John Dougherty, in laying off Demint's first plat of Springfield, and by Jonathan Donnel on the survey of 'New Boston.'" It is to be noted that some discrepancies exist in the listing of names and dates of the previous owners between Steele's _History_ and those which actually appear on the cover of the instrument. Steele apparently made the changes he deemed necessary in his account of the instrument.

Between 1791 and 1795 the same address was also occupied by a cooper named Michael Davenport, and from 1797 to 1801 by "the Widow Davenport," presumably widow of Michael. From 1802 to 1804 the same address is listed for William Davenport, "Mathematical Instrument Maker," apprentice to William Dean, and believed to be the son of Michael. During the next ten years Davenport's address was 45 South Front Street, and then, to 1820, was 25 South Front Street.[64] Several brass surveying compasses bearing his name have survived.

Another maker of mathematical instruments about whom nothing further is known is Charles Taws, who was listed in this manner in the Philadelphia directory of 1795.

The making of instruments in glass appears to have been a specialized business in the Colonies, because those who worked in this field do not appear to have produced instruments in other materials. One of these makers of glass instruments--specifically barometers, thermometers and "Glass Bubbles to prove spirits, of different kinds"--was Alloysius Ketterer. He maintained a shop in the house of a Charles Kugler at "the sign of the Seven Stars," corner of Race and Fourth Streets in Philadelphia, in 1789. He moved to another address in Race Street in 1790 and was eventually succeeded in business by Martin Fisher, who increased the number of types of glass instruments made and sold at the shop.[65]

Henry Voight (1738-1814) was a man with a varied career. Of German ancestry, he was trained as a clock-and watchmaker, and he was a skilled mechanic. He operated a wire mill in Reading, Pennsylvania, in 1780 and moved shortly thereafter to Philadelphia, where he established a clockmaker's shop on Second Street. He became a close friend of the inventor John Fitch in about 1786, and in the following year he became a shareholder in Fitch's company for producing steamboats. In 1792 he entered into a short-lived partnership with Fitch to manufacture steam engines. In 1793 he invented a process for making steel from bar iron. In the same year President Washington appointed Voight to the position of chief coiner of the Philadelphia Mint, and he continued in that position until his death in 1814. He was closely associated with David Rittenhouse, Andrew Ellicott, Edward Duffield, and others.

Although there is no record of Voight's career as an instrument maker, there is nevertheless some evidence that he worked in that field. In the collection of the U.S. National Museum there is a brass equal-altitude telescope (fig. 31) made about 1790, that is signed "Henry Voigt." His name was spelled "Voigt" and "Voight" interchangeably.

Henry's son Thomas Voight worked as a clockmaker on North Seventh Street in Philadelphia around 1811. He was the maker of a tall case clock, ordered by Thomas Jefferson, that Jefferson's daughter presented in 1826 to her father's physician, Dr. Dunglison, for settlement of medical services.[66]

There were several instrument makers in provincial Pennsylvania, but the majority of such craftsmen worked in Philadelphia. Dr. Christopher Witt (1675-1765), an emigrant from England, worked in Germantown from about 1710 to 1765. He was well known locally as a medical doctor, scientist, "hexmeister", clockmaker, and teacher. It is traditionally claimed that he produced mathematical instruments in addition to timepieces. He described the great comet of 1743 and built his own 8-foot telescope. One of his apprentices may have been Christopher Sower (1693-1740), of Germantown and Philadelphia, who achieved renown as a doctor, farmer, author, printer, papermaker, and clockmaker. He also produced mathematical instruments.[67]

George Wall, Jr., of Bucks County, was the author of a pamphlet on the subject of "a newly invented Surveying Instrument, called the Trigonometer." The instrument was described and illustrated in the pamphlet, which was published in Philadelphia in 1788. Washington's own copy, bearing the inscription "To the President of the United States from the Author" is in the collection of the Boston Athenaeum.

George Ford of Lancaster maintained a shop on West King Street, probably from the end of the 18th century until 1840. There he made tall case and other clocks, surveying compasses, and other instruments for the retail trade. However, he "did not push the business of Watchmaking and Clockmaking so hard, for the manufacture of nautical instruments and surveyors instruments was a more important part of his business."[68] Upon his death in 1842 he was succeeded by his son George Ford II.

Thomas Mendenhall repaired clocks and mathematical instruments in a shop on King and Queen Streets in the borough of Lancaster in 1775.[69]

John Wood of Philadelphia was a wholesale supplier of parts for clockmakers and watchmakers. According to a notice in the May 7, 1790, issue of _Pennsylvania Packet_, he had "pocket compasses, steel magnets, Surveying compass needles, surveyors chains, etc." Since no mention was made of making or mending instruments, it is probable that Wood was merely importer and wholesaler.

Another instrument maker of Philadelphia about whom little is known is Bryan Gilmur, who worked at the close of the 18th century making instruments and, possibly, clocks.[70]

James Jacks (also listed as James Jack) first worked as clockmaker and watchmaker in Charleston, South Carolina, in the 1780's; he later moved to Philadelphia where he maintained a shop on Market Street where he sold a variety of instruments. In the June 5, 1797, issue of _The Federal Gazette_ he announced that, in addition to jewelry, clocks and watches, he "also had for sale mathematical instruments in cases very compleat; Surveyors Compasses and Theodolites; ship's Quadrants; Fishing Rods and Reels; Billiard Balls and sheet ivory; silver and plated coach, chaise and chair Whips."

_Instruments of Wood_

The Use of Wood

An interesting fact concerning the instruments produced by 18th-century craftsmen is the relatively high incidence of instruments constructed of wood instead of brass or other metals. A significant reference to this use of wood is found in Alexander Hamilton's "Report on the Subject of Manufactures," published in 1821,[71] which refers to such items of wood as "Ships, cabinet-wares and turnery, wool and cotton cards, and other machinery for manufactures and husbandry, mathematical instruments," ... and "coopers' wares of every kind."

Most common of these mathematical instruments is the surveying compass, possibly the instrument most needed and produced in America. Recorded in public and private collections are 31 known examples of such compasses made of wood, a rather large number. Furthermore, a substantial number of these were being produced simultaneously by skilled craftsmen who at the same time were making similar instruments in brass.

Finally, from a study of the surviving examples of wooden surveying compasses comes the interesting and perhaps significant fact that all the known makers were from New England. The towns and cities in which they worked were Boston and Plymouth in Massachusetts, Windsor and New Milford in Connecticut, and Walpole and Portsmouth in New Hampshire. A careful study of the advertisements and works of the instrument makers in the other large cities of the Colonies, such as New York, Baltimore, and Philadelphia, reveals no examples of wooden scientific instruments. Excluded, of course, are those instruments normally made of wood, such as the octant and the mariners quadrant.

Two possible exceptions are instrument makers of New York City. The first is James Ham, a maker of mathematical instruments "at the house wherein the Widow Ratsey lately lived near the Old Dutch Church on Smith Street" who advertised in the May 27, 1754, issue of _The New York Mercury_ that he made and sold

mathematical instruments in wood, brass, or ivory, theodolites,
circumferentors, sectors, parallel rules, protractors, plain
scales, and dividers, the late instrument called an Octant, Davis'
quadrants, gauging rods, sliding and gunter's scales, amplitude
wood box and hanging and pocket compasses, surveying chains,
japanned telescopes, dice and dice boxes, mariners compasses and
kalenders, etc.[72]

Ham subsequently moved his business to Philadelphia where he first advertised in 1764, stating that he worked at the sign of "Hadley's Quadrant" at Front and Water Streets in Philadelphia and sold all forms of instruments in silver, brass, and ivory as well as "large brass pocket dials, fitted to the latitude of Philadelphia." In 1780 his son James Ham, Jr., advertised from the same address as a maker of mathematical instruments, specializing in "Hadley and Davis Quadrants."[73]

The second exception is William Hinton, who advertised in _The New York Gazette and the Weekly Mercury_ of May 4, 1772, as follows:

WILLIAM HINTON, Mathematical Instrument Maker, at Hadley's
Quadrant, facing the East Side of the New Coffee House, Makes and
sells all sorts of Mathematical Instruments, in Silver, Brass,
Ivory or Wood, viz. Hadley's Quadrants, Davis's do. Crostaf's
Nocturnals, Gunters Scales, Plotting do. Cases of Instruments,
Surveyors Chains, Dividers with and without Points, Protractors,
paralelled Rulers, Rods for Guaging, Amplitude, hanging and common
Wood Compasses, Pocket do. three Foot Telescopes, Pocket do.
Backgammon Tables, Dice and Dice Boxes, Billiard Balls and Tacks,
Violin Bows and Bridges; with a Variety of other Articles too
tedious to mention: And as he is a young Beginner, he flatters
himself, he shall meet with Encouragement; and all those who please
to favour him with their Custom, may depend upon having their Work
done in the neatest and best Manner, and at reasonable Rates.

It is mentioned that both Ham and Hinton worked in wood in addition to other materials, but it appears very likely that the use of wood referred specifically to those instruments normally made of wood, such as quadrants and octants, and not to other instruments.

Any attempt to relate the making of wooden scientific instruments with the production of wooden clocks in New England has no conclusive result, yet there appears to be some relationship between the two. Wooden clocks were made as early as the 17th century in Germany and Holland, and they were known in England in the early 18th century. In the Colonies the wooden clock was first produced in Connecticut, and the earliest type was associated with Hartford County. This form was quite common in East Hartford in 1761, and its first production may have had some association with Ebenezer Parmele (1690-1777), since an association between Parmele and all of the earliest makers of wooden clocks can be traced.[74] Little is known about Parmele. His father was a cabinetmaker in Guilford, Connecticut, and Ebenezer practiced the same craft, in addition to being a boat builder. He was a man of means, held various town offices, and served as town treasurer. For a while he operated a cargo sloop on Long Island Sound. In 1726 he built the first tower clock in Connecticut for the Guilford meeting house. He was a versatile worker in wood, and it is believed that he served an apprenticeship in New York City with a Dutch clockmaker from 1705 to 1710, where he may have learned to make wooden clocks.

This early type of wooden clock is associated with Benjamin Cheney (1725-1815), a clockmaker of East Hartford. The early or "Cheney" type of wooden clock was produced in Connecticut as late as 1812. A later form of the wooden movement began to appear about 1790, and was probably introduced by Gideon Roberts (1749-1813) of Bristol. Roberts had lived in the Wyoming Valley of Pennsylvania before 1790, and it is conjectured that he became familiar with the wooden clocks produced by the German settlers of that region.[75]

It is not surprising that the wooden clock had its colonial origins in Connecticut, so completely was it adaptable to the pioneer conditions in that colony. The materials were the abundant native woods-cherry, apple, oak, and laurel. The parts were made with simple carpenter tools and a wooden foot lathe, using the methods of the cabinetmaker. Although it has been suggested that some relationship may have existed between the makers of wooden instruments in England, and the makers of wooden clocks and scientific instruments in the New England Colonies,[76] a careful study has failed to reveal any connection, and there appears to be little if any parallel between the two groups. Basically, the use of wood for making some mathematical instruments in New England resulted from the native familiarity with this material, which was also employed to a considerable degree for the construction of domestic and agricultural implements, and from the fact that many of the early clockmakers had been trained as or by cabinet makers, carpenters, and even dish turners. Random examples of a few of the more prominent clockmakers are Joseph Hopkins, a wood turner; Chauncey Jerome, who had been apprenticed to a wood turner; and Silas Hoadley, who had worked with a cabinet maker.

Perhaps a basis for the prevalence of wood in these trades is to be found in the lines from a familiar poem:

The Yankee boy, before he's sent to school,
Knows well the mystery of that magic tool,
The Pocket knife.[77]

But, from the technical point of view, it should be noted that those craftsmen who produced clocks and instruments and did not have their own brass foundries probably found that a good piece of straight-grained hardwood was as stable for holding its dimensions with the grain as a piece of brass. Shrinkage was at right angles to the grain; hence, for fixed linear stability wood was as good as brass. For rigidity per unit weight, wood was better than brass; and for availability and ease of working, wood was superior to brass.

It has often been ventured that wooden clocks were first produced in Connecticut, because of the scarcity of brass for this purpose during the years between the beginning of the Revolution to the end of the War of 1812. The claim is made that brass was not being produced in the Colonies and that it was imported exclusively from England during this period. Certainly, the wholesale price index of metal and metal products shows a steady increase during this period, and a considerable jump during the period of the War of 1812, making brass an extremely expensive material. This may explain why the makers of clocks and instruments who made and sold brass clocks and instruments were producing the same products at the same time in wood which, as we have seen, was both plentiful and a satisfactory substitute.

It can be surmised, therefore, that surveying instruments, as well as instruments for other purposes, were produced in both brass and wood simultaneously by many of the New England makers in order to provide suitable instruments in a flexible price range to meet the demands of the trade. Whereas today modern manufacturing methods make it possible to produce instruments in a wide variety, both in quality and price, to suit the needs and capabilities of every prospective purchaser, the production facilities of the 18th century were much more limited. The constant factor of skilled hand labor was costly. Metal was expensive. As evidenced in the records of Daniel Burnap, for instance, it was possible to produce surveying compasses in brass in two grades, presumably one more elaborate than the other. Yet Burnap's prices ranged between six pounds and four pounds for the metal instruments, making them still well out of reach of many of the would-be surveyors. Accordingly, Burnap--and presumably numerous other instrument makers of the period--produced from wood an economy model that sold for not more than two pounds, thus placing the item within the reach of the nonprofessional surveyor.

This theory is supported amply by the discovery that several of the instrument makers who worked in brass also made instruments of wood during the same periods. In addition to the evidence in the records of Daniel Burnap, there are the surviving surveying instruments in brass and wood made by Samuel Thaxter, Thomas Greenough, and John Dupee, leaving little if any doubt that the reason for producing surveying compasses and similar items of wood during the 18th century was to satisfy the need for reasonably accurate yet inexpensive instruments.

Surviving Instruments

The fact that the surviving examples of the wooden instruments were produced only in New England seems to indicate merely that the New England instrument makers were more familiar with the use of wood as a material, and had greater facility in working with it.

Undoubtedly other instruments produced by the 18th-century American makers have survived in addition to those already found. Quite likely examples of these wooden instruments still remain hidden in unexplored attics and other repositories. Yet, if the few thus far discovered is any criterion, the number ultimately recoverable will probably be but a fraction of the great number produced by the 18th-century makers during the half century or more in which they worked. Even allowing for those probably destroyed in the natural course of events, one cannot help but wonder what has happened to the remainder.

A list of the surviving wooden instruments is given in the Appendix (p. 153). Many of these wooden instruments bear signatures or other marks that permit identification of their makers, but a number of specimens have been found that are not signed. In most instances they show evidence of professional workmanship, and they may have been the work of known craftsmen. One or two examples are obviously homemade by unskilled amateur practitioners.

Several unsigned wooden instruments of professional quality are in the collection of the Dartmouth College Museum. Of particular interest is a semicircumferentor (fig. 32) that belonged to the Reverend Eleazar Wheelock (1711-1779) who founded Moor's Indian Charity School at Lebanon, Connecticut, which subsequently developed into Dartmouth College. It is claimed that it was with this instrument that the area of the college was surveyed when it moved to Hanover, N.H. The instrument is actually a graphometer consisting of a block of hard wood faced with a brass plate with a trough compass; it is tentatively dated about 1769. The identity of the maker is unknown, but it may have been the product of Hagger, who made a similar instrument, illustrated here, or it may have been produced by any one of the other makers noted. The type of instrument is an old one. It is described in John Love's _Geodaesia, Or the Art of Surveying and Measuring Land_, published in London in 1688. Abel Flint[78] also commented on this semicircle as being sometime used, as well as the plane table and perambulator--

... but of these instruments very little [use] is made in New
England; and they are not often to be met with. For general
practice none will be found more useful than a common chain and a
compass upon Rittenhouse's construction.

Another of the unusual wooden surveying instruments in the collection of the Dartmouth College Museum is a wooden surveying compass (fig. 33) in which the sighting bars appear relatively close to the dial. A metal plate, painted green, is stamped with the degrees marked to 90 deg.. A single N for the north point is stamped into it, presumably with steel punches. The instrument is relatively primitive, and is sufficiently different from the other examples noted to merit mention. There is no maker's name, nor any clue to the date or place or period of origin.

An unsigned semicircumferentor made of wood is owned by Mr. Roleigh Lee Stubbs of Charleston, West Virginia. The instrument measures 3-3/4 in. by 7-1/2 in. by 1 in., and there are sighting bars 3 in. high on a swinging brass bar pinned at the center of the base. It has a trough compass, and the gradations around the edge of the semicircle are marked with tiny brass pins. The date "1784" is stamped into the wood with the same type of figures as appear in the degree markings, probably with small steel punches.

A surveying compass of the conventional type, also made of wood, is in The Farmer's Museum at Cooperstown, New York. The wood is ash or oak, 12-3/4 in. long and 6-1/2 in. in diameter, with the sighting bars 5 in. high. The compass card consists of cut-out printed letters pasted upon a printed compass rose, and the fleur-de-lis at North is inked-in by hand. This may be a homemade replacement of the original card. The instrument is believed to date between 1760-1775.

Of equal interest is a large semicircumferentor made by an unknown American instrument maker in the second half of the 18th century. The instrument (fig. 34) consists of a plate of hammered brass attached to a quarter circle block of mahogany, with a glass covered trough compass within a silvered opening, and the gradations stamped into the brass. The brass sighting bars are attached to a swivelling bar that can be fixed in place with a set screw underneath the block. The instrument, which is in the collection of the writer, is not signed with a maker's name. Its workmanship is excellent, and professional.

On the basis of a comparison of these instruments with those produced by known professional makers, it becomes apparent that all of them were made professionally. The possibility that some of these wooden surveying compasses may have been produced by the farmer or local surveyor for his own use is extremely unlikely. Homemade instruments such as those described below were unquestionably the exception instead of the rule.

An exception to this generalization, and an extremely fine example of the whittler's art, is a surveying compass (fig. 35) in the collection of Mr. Preston R. Bassett of Ridgefield, Connecticut. This is a comparatively small instrument made of maple; the body was painted red. It is carved entirely by means of a jackknife, and the sighting bars are also whittled to shape and mortised permanently into the frame. A lid covering the dial is carved from soft pine. The compass dial is handdrawn in black ink, and the North point is painted in the form of a decorative fleur-de-lis in red and green. A homemade ring of pewter surrounds the compass rose at needle level. This is graduated in degrees, with every 10 deg. marked, stamped with steel punches. The ring is set into the base by means of wooden pegs. The steel needle is nicely cut, and it is probably the only part purchased by the maker.

This is unquestionably a homemade instrument produced by a skillful whittler early in the 18th century.

Compass Cards

A fact that becomes apparent in a comparison of the surviving examples of wooden surveying compasses made in New England is the similarity of the compass cards used by makers in the seaport cities (see fig. 36). The compass card in each of these instances is the type designed for a mariner's compass, bearing a star of 32 rays to mark the 32 points of the heavens. The North point is designated with an elaborate fleur-de-lis, and the East is emphasized with scrollwork. These are features which were not designed primarily for land surveying. Presumably, these makers had a quantity of engraved or printed compass cards that they used in both marine and land surveying compasses. This is true in the case of the compasses made by James and Joseph Halsy, Greenough, Clough, Warren, Thaxter, Dupee, Breed, and Bowles. On the other hand, the dial of Huntington's compass was painted directly on the wood, and the semicircumferentors do not utilize the marine compass card. Obviously these makers resorted to this practice for reasons of economy--to reduce costs of engraving and printing, and using the same card for both types of instruments that they produced.

Trade Signs

An interesting sidelight in the study of the makers of scientific instruments is the advertising they used, particularly the design of their signboards. The most popular symbol appears to have been the quadrant, as the phrase "At the Sign of the Quadrant" is found repeatedly in advertising in several of the seaport cities of the 18th century.

In Providence, William Hamlin used the designation in the first part of the 19th century, while Philadelphian John Gould featured the sign at the end of the 18th century. During an even earlier period, William Hinton designated his address to be "At Hadley's Quadrant" in New York City. Both Gould and Hinton were English, which may have had some bearing on their selection of the quadrant as a symbol of their merchandise.

Other signboards were as colorful, such as Jonathan Dakin's "Sign of the Hand and Beam," James Youle's "Sign of the Cross-Knives and Gun," and Charles Kugler's house in Philadelphia with its "Sign of the Seven Stars" (that is, Great Bear), which housed the shops of several instrument makers.

The two most interesting and significant of the instrument makers' trade signs were those advertising the shop of Samuel Thaxter. The first of these was the carved wooden figure of "The Little Admiral," which was a favorite landmark at No. 1 Long Wharf in Boston for almost a century and a half. It was the handiwork of John Skillin, the 18th-century woodcarver of Boston, upon whose death on January 24, 1800, the _Chronicle_ commented that "he was for many years the most eminent of his profession." John Skillin and his brother Simeon worked in Boston from about 1777 and produced most of the figureheads that issued from that port during that period, as well as a number of other notable ornamental wooden figures.

According to Mrs. H. Ropes Cabot of the Bostonian Society, the figure of "The Little Admiral" (fig. 37) had been carved for William Williams, who brought it with him to Boston from Marblehead in 1770 when he established his shop. The figure was installed in front of the Crown Coffee House, and Williams's shop was thereafter designated by this symbol. The trade sign survived through the years of the Revolutionary War. When the original building of the Coffee House was burned, the carving was saved and installed on the new building erected in its place. In an account of Boston landmarks, Porter[79] related the figure to the Admiral Vernon Tavern at the eastern corner of Merchants Row. He was proved to have been in error, however, since the trade sign of that public-house was a portrait bust of Admiral Vernon and the place was known as the Vernon Head Tavern for half a century, even after the end of the Revolution.

When Samuel Thaxter purchased the business from Williams's estate he acquired the figure as well, and he moved it to each new location for his shop. The figure of "The Little Admiral" continued to designate the firm even after Thaxter's death, until the firm finally went out of existence at the beginning of the 20th century. When the old store was torn down in 1901, the figure was preserved, presumably by the last owner's family. In 1916 it was acquired for the Bostonian Society by several of its members, and the figure has been preserved in the Society's Council Chamber since that time.

The other interesting trade sign utilized by Samuel Thaxter is a carved figure of Father Time that is credited to John Skillin (see fig. 38). The figure is believed to have been commissioned by Thaxter during the last decade of the 18th century and installed by him in the interior of his shop. It is an important example of the American woodcarver's art, and is equivalent to the best work of the Skillin brothers.

The Makers

Surprisingly, the names of the craftsmen who produced wooden instruments are not noted among the instrument makers. With only one or two exceptions, their names are hitherto unknown in the history of American science, and for that reason it has been considered advisable to present all available information that could be accumulated about them.

_Joseph Halsy_