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Test Types No 1981
TEST CHARTS
near vision test
American Optical Company
North America: USA
Mid 20th c.
card
overall: 203 mm x 130 mm
1998.262
TEST CHARTS
near vision test
American Optical Company
North America: USA
Mid 20th c.
card
overall: 203 mm x 130 mm
Hand-held reading test chart. Card, printed on one side only in text of increasing size. Seven paragraphs of graduated text corresponding to a prescription of 0.50 D, 0.75 D, 1.00 D, 1.25 D, 1.50 D, 1.75 D, 2.00 D. The passages are excerpts from the book 'Two Years Before The Mast' by Richard Henry Dana Jr (1840).
1998.262