Diamond test type for astigmatism

Made:: 1901-1930

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Diamond test type for astigmatism, Orthops, card, British
Science Museum Group
© The Board of Trustees of the Science Museum

Diamond test type for astigmatism, Orthops, card, British, early 20th century

Details

Category:: Ophthalmology

Object Number:: 1977-627/26

Materials:: card, paper (fibre product) and metal (unknown)

Measurements:: overall (lying flat): 18 mm x 346 mm x 337 mm, .466 kg

type:: test types

credit:: Spread Eagle Antiques

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Diamond test type for astigmatism

Details

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