| 1935 American Optical Dual Spectrocope - .99 cents NR |
| Vintage Bright-Line Hemacytometer by American Optical |
| VINTAGE GREEN TIN KINGBILT WELLSWORTH AMERICAN OPTICAL |
| Pilot's Sunglasses American Optical 12K Gold Antique? |
| Eye Glasses American Optical TOTALLY Round 12K VGC |
| Lensometer Wellsworth Jr. American Optical 1174 Vintage |
| American Optical Military Original Pilot Sunglasses |
| Old Postcard, American Optical Co., Southbridge, MA |
| American Optical Co Plant Lensdale Southbridge Postcard |
| American Optical 15X Eyepiece |
| AO American Optical Spencer 820 Rotary Microtome Lab |
| Phoropter, phoroptor, refraction: American Optical |
| American Optical Lensometer, Lensmeter, Optical 11360 |
| American Optical Lensometer, Lensmeter, Optical 11320 |
| AMERICAN OPTICAL LENSOMETER JR. MODEL M603A (USED) |
| American Optical Project-o-chart |
| American Optical/Reichert 110 Phase Contrast Microscope |
| AMERICAN OPTICAL AO DUAL HEAD TEACHING MICROSCOPE |
| American Optical Binocular MICROSCOPE one-ten |
| American Optical AO 1810 Inverted Tissue Microscope |