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Inverted ICF Metallurgical Microscope

Date: 1920 - 1929 | Identifier: LL02.48.01.21
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...