Inverted ICF Metallurgical Microscope
Date: 1920 - 1929 |
Early metallurgical microscopes were inconvenient to use for many engineering applications. Bausch and Lomb designed this inverted instrument specifically for use in metallurgy with a large view camera. The objectives use a clip changer. Two types of light sources were available: the 100-watt low voltage ribbon filament (as in this example) and a carbon arc lamp (similar to A24). Inverted metallurgical microscopes are still being manufactured. This microscope was manufactured in the 1920's. more...