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Image
Has Image
2
Non-Commercial Use
2
Category
Ophthalmology
2
Collection
Sir Henry Wellcome's Museum Collection
2
Object type
near-point rules
2
Maker
American Optical Company
2
American Optical Company; Keuffel and Esser Company
2
Place of origin
New York
2
New York, New York state, United States
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Accommodation rule with instructions
1910-1930
Accommodation rule with instructions
1910-1930
