GLASS AND THERMOMETRIC
Blundy, Charles (fl. 1753), Charleston, S.C.; also made watches.
Donegan, Joseph (fl. 1787), New York and Philadelphia; also made philosophical instruments.
Fisher, Martin (fl. 1790), Philadelphia.
Gatty, Joseph (fl. 1794), New York and Philadelphia; also made philosophical instruments.
Ketterer, Alloysius (fl. 1789), Philadelphia.
Wistar, Richard (fl. 1752), Wistarburg, N.J.
HOROLOGICAL
Blundy, Charles (fl. 1753), Charleston, S.C.; also made thermometric instruments.
Burnap, Daniel (1759-1838), East Windsor and Coventry, Conn.; also made surveying instruments.