Aluminum Dust Cover Cap for AO American Optical 10 / 20 Trinocular Microscope

A/O American Optical Model 395 Microscope Transformer, 30 Watt Lamp Power Supply

American Optical Company (AO) 1051 Vintage Microscope Illuminator Transformer

AO American Optical 10/2.5x Plan Achromat Microscope Objective

American Optical Microscope With Illuminator Transformer

AO American Optical Model 359 Microscope Spot Illuminator Light Lamp

Ao American Optical Microscope Illuminator with Arm Assembly

AO AMERICAN OPTICAL LAMP HSG ASSY 6V20W COMPLETE WITH BULB AND CORD**TESTED**