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Title: Glass hydrometer by unknown (German) maker. 274mm long. Rang [Go to resource]
Description: Glass hydrometer by unknown (German) maker. 274mm long. Range 1.400 -1.500. Mercury weight and paper scale. In mottled-black cardboard tube, 1870 - 1940. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1870-1940 Source: Science Museum Creator: unknown (German) Identifier: 1997-1090 Go to resource More Like this...
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