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Title: Glass 'Technico' specific gravity hydrometer. 181mm long. Ra [Go to resource]
Description: Glass 'Technico' specific gravity hydrometer. 181mm long. Range 1.750 - 1.800. Mercury weight and paper scale. In green cardboard tube, 1930 - 1980. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1930-1980 Source: Science Museum Creator: A. Gallenkamp & Co. Ltd. Identifier: 1997-1119 Go to resource More Like this...
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