Microscope lamp on stand and with power unit by Ernst Leitz, Wetzlar, Germany, 1938 Microscope lamp on stand and with power unit by Ernst Leitz 1938
Koch and Walz's microscope lamp with metal chimney and 2 glass rods, made by Kalthoff Born Koch and Walz's microscope lamp with metal chimney and 2 glass rods
Microscope lamp (with flat wick for paraffin oil) on iron stand with upright brass rod Microscope lamp