Diamond test type for astigmatism
- Made:
- 1901-1930
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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
