AO American Optical One-Ten Microscope Illuminator Lens Assembly

Vintage American Optical AO Spencer Microscope Binocular Head

PARFOCAL TUBE FOR Spencer, AO American Optical TRINOCULAR MICROSCOPE

PARFOCAL C-MOUNT ADAPTER FOR Spencer, AO, American Optical TRINOCULAR MICROSCOPE

Microscope Bulb Remover Tool FOR AMERICAN OPTICAL / Spencer 1031 Illuminator

American Optical AO Spencer Sixty Microscope Monocular Eyepiece Part

American Optical Spencer Microscope Condenser N.A. 1.25 Buffalo

Spencer American Optical AO N.A. 1.25 Microscope Condenser