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Title: [Go to resource]
Description: Viewer formed from convex lens at top of brass tube, with 4 oval windows, around base, brass is lacquered, French, late 19th century License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: magnifiers Temporal: 1871-1900 Source: Science Museum Identifier: A56481 Go to resource More Like this...
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