American Optical Model 655, 115V, 60HZ with Microscope Light Source Transformer

6" Optical Glass Triangular Prism Teaching Light Spectrum Science Photography

American Optical Corporation Microscope 1036A with Illumination Transformer

Vintage Antique Spencer American Optical SN: 379387 Microscope

AO American Optical 23mm Microscope Eye Piece Eyepiece VGUC Vintage

2.5 in Optical Glass Triangular Prism Teaching Light Spectrum Physics USA SELLER

American Optical Cat. 1084 Microscope Condenser N.A. 1.25 ASPHERIC

American Optical AO Microscope Eyepiece 10X W.F. Cat 180 AO & Assorted Eye Tubes