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Title: Glass specific gravity hydrometer by unknown English maker. [Go to resource]
Description: Glass specific gravity hydrometer by unknown English maker. 187mm long. Range 0.750 - 0.800. Mercury weight and paper scale. In faded blue cardboard tube, 1900 -1960. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1900-1960 Source: Science Museum Identifier: 1997-1112 Go to resource More Like this...
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