Priced and illustrated catalogue of mathematical instruments...Swiss drawing instruments, transits, levels.. (1867)
McAllister, William Y · Philadelphia PA · leaf 22
23 … Price. No. Oermnn Silver Protractor, with Ilorn centre and moveable Arm, 8290. 5 7 50 X circle, \ degrees, 5 inches diameter • German Silver Protractor, with Horn centra and moveable. Arm, 8201. 8 00 X circle, J degrees, 6 inches diameter • German Silver Protractor, with Horn centre and moveable…
Mathematical instruments
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
