Mendenhall, Thomas (fl. 1775), Lancaster, Pa.; also made clocks.
Newell, Andrew (1749-1798), Boston; also made compasses and surveying instruments.
Platt, Augustus (1809-1886), Columbus, Ohio; also made surveying instruments.
Pryor, Thomas (fl. 1778), Philadelphia.
Revere, Paul (1735-1818), Boston, Mass.
Sibley & Marble (late 18th century), New Haven, Conn.; also made clocks and watches.
Sower, Christopher (c. 1724-1740), Germantown and Philadelphia, Pa.; also made clocks.
Taws, Charles (fl. 1795), Philadelphia.
Thaxter, Samuel (1769-1842), Boston; also made surveying and nautical instruments.
Walpole, Charles (fl. 1746), New York.