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Title: Glass 'Technico' specific gravity hydrometer. 177mm long. Ra [Go to resource]
Description: Glass 'Technico' specific gravity hydrometer. 177mm long. Range 0.750 - 0.800. Mercury weight and paper scale. In black 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: 1997-1122 Go to resource More Like this...
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