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Self-Test Optometer
OPTOMETRIC INSTRUMENTS
optometer
C. G. Optical Co.
North America: USA, Illinois, Chicago
Early 20th c.
cardboard; wood; glass
overall: 205 mm x 340 mm x 150 mm

Optometer. Dark brown paper-covered cardboard construction. Wooden arm with fold-down handle/lens disc and target holder, each attached by a brass hinge. Disc contains fourteen lens apertures, marked 20-33 (no 22 is empty). Printed paper test target pasted to cardboard holder, with printed instructions below.


2010.358

Gift of Dr Palmer R. Cook OD, 2010



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