(Instructions for) the polarized Giantscope (ophthalmoscope)

Catalogue Number: 2019
(Instructions for) the polarized Giantscope (ophthalmoscope)
Category: Papers
Sub-Category: Ophthalmic product manual/instructions
Corporation: American Optical Company
Year Of Publication/Manufacture: 1957
Time Period: 1940 to 1999
Place Of Publication/Manufacture: New York
Publisher/Manufacturer: American Optical Company
Description Of Item: Paper wrappers printed in two colours, 8 pages, one black and white photographic illustration and 2 line drawing figures.
Historical Significance: The Giantscope was first introduced in 1926. It was one of the first ophthalmoscopes to use a polarizing filter to lessen corneal reflections. The first three patents were granted in 1933 & 1934. The fourth was not granted until April 27, 1937. All were for Edwin H Land's inventions for polarizing filters. The museum holds an example of this instrument dated c1936 (Cat No 2011)
How Acquired: Purchased by Kett Museum
Date Acquired: April 2012
Condition: Clean but has been folded
Location: Archive office. Pamphlet and ephemera filing cabinet. Drawer 5

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