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24 Optometer after Dr Badal. French c. 1885[190

Description: Optometer (ophthalmic instrument) A device, used for measuring spherical and/or cylindrical prescription for eyeglasses, from the middle of the 18th century until around 1922, when modern instruments were developed.[1][2][3] The term, coined in 1738 by W. Porterfield to describe his Scheiner slit optometer,[4] and used for 200 years to describe many different inventions to measure refractive error of the eye.
Optometer after Dr Badal. French c. 1885 Laquered brass. Tube: 28,5 cm up to 42,5 cm when extended fully. Hight: 28 cm up to 38 cm when fully extended. Condition: complete and working, retains most of its original laquer. The base shows quite some oxidation.
Technique: PRICE ON REQUEST
  • Number: 1900004
  • Dealer: Speculum Orbis Nauticum







 
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