Gunnery, engineering, and surveying were fields of applied mathematics and their instruments were often finely made by the same makers. This brass protractor is marked out in degrees and is signed along the bottom by Pierre Le Maire II (1717-1785.) He worked on the Quai de l’Horloge in Paris and signed his instruments as “Le Maire fils” until the death of his father in 1744/45, was also the nephew of instrument maker Jacques Le Maire (active 1714-1745,) made mathematical, surveying, and drawing instruments, sundials, etc., and served as Engineer to the King. The style of his signature on this dates it around 1762, toward the end of his most active period, and the end of the French and Indian War, but very much in time for use during the Revolution when engineers were in short supply and high demand by American forces to keep the British bottled up where they had a foothold and out of everywhere else.  [sr]

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