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View all items from Wild, Weird & Wonderful Sale of Unique Items, Jewelry & Curiosities sale
Antique American Optical Co. Professor Holmgren Worsted Test for Color Blindness
April 18th 2020 @ 8:02pm EST
Winning Bid
$375
Item Details
Developed by Professor Holmgren in 1879 and manufactured by the American Optical Company, Southbridge, Mass.t as a test for color blindness among employees of railway and shipping lines. The innovative test required the employee to match different tassels of worsted wool rather than naming the colors and the success of the test was attributed to the simplicity and portability of the kit.
| Brand | American Optical Company |
| Date | Circa 1900 |
| Additional Information | Developed by Professor Holmgren in 1879 and manufactured by the American Optical Company, Southbridge, Mass.t as a test for color blindness among employees of railway and shipping lines. The innovative test required the employee to match different tassels of worsted wool rather than naming the colors and the success of the test was attributed to the simplicity and portability of the kit. |
Condition
- some wear at the corners of the original box
Dimensions
10.5" W x 2.0" H x 5.0" D
Item #
ITMG525113
