WOOD OPTOMETER

$125.00

Patented in 1928, and used in drugstores as “do it yourself” diopter testers. The customer would look through the wooden eyepiece and adjust the sliding image of dots until in focus.

Marked “Property of Self-Test Optical Co., Chicago, Ill.” 11.5” x 1” x 2”

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Patented in 1928, and used in drugstores as “do it yourself” diopter testers. The customer would look through the wooden eyepiece and adjust the sliding image of dots until in focus.

Marked “Property of Self-Test Optical Co., Chicago, Ill.” 11.5” x 1” x 2”

Patented in 1928, and used in drugstores as “do it yourself” diopter testers. The customer would look through the wooden eyepiece and adjust the sliding image of dots until in focus.

Marked “Property of Self-Test Optical Co., Chicago, Ill.” 11.5” x 1” x 2”