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Title: Topometer, combined box sextant & range-finder, British, 1905-1920 [Go to resource]
Description: Owen's topometer, with case, made by James A. Sinclair and Co. Ltd., 54 Haymarket, London, 1905-1920 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: box sextant
optical range-finderTemporal: 1905-1920 Source: Science Museum Creator: James A Sinclair & Co Ltd Identifier: 1963-292 Go to resource More Like this...
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