American Optical Company Spencer Microscope

American Optical Corp Microscope Model 41 10/20

American Optical Corporation One-Sixty 150, 160 Series 100-500 Zoom Microscope

American Optical Monocular Microscope Model Sixty 3 Objective 4/10/43 Used

Vintage American Optical AO Series Sixty Microscope - Model 61 Spencer - Working

AMERICAN OPTICAL CORP SIXTY 3 Objective Laboratory BULB Microscope WORKING

National Optical Model 185 Microscope