Condenser, darkground, with 1/12 oil immersion objective, in case Condenser, darkground, with 1/12 oil immersion objective
Condenser, substage, with aperture disc and iris diaphragm, by C. Collins, 77 Great Titchfield Street, London, England. Condenser, substage, with aperture disc and iris diaphragm
Objective, 1/2 inch, in cannister, having correction collar and cover slip adjustment Objective, 1/2 inch
Illuminator, condenser, vertical, on bayonet catch Illuminator, condenser, vertical, on bayonet catch
Objective, holoscopic, 12mm. in cannister, W. Watson & Sons Limited, 313 High Holborn, London, England. Objective, holoscopic, 12mm. in cannister