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Title: Howard type Synoptophore, by Elliott Optical Company, London [Go to resource]
Description: Howard type Synoptophore, by Elliott Optical Company, London, c 1928. used to train patients with a squint. Type invented by Ettles about 1913, improved by Howard (patented 1927) License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1927-1929 Source: Science Museum Creator: Elliott Optical Company Identifier: 1981-362 Go to resource More Like this...
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