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Title: Glass hydrometer marked Gallenkamp and marked 'Spec. Gew.' ( [Go to resource]
Description: Glass hydrometer marked Gallenkamp and marked 'Spec. Gew.' (Probably made for use in Germany.) Range 0.800 - 1.000. 372mm long. Mercury weight and paper scale. In wooden tube, 1900 - 1940. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1900-1940 Source: Science Museum Creator: A. Gallenkamp & Co. Ltd. Identifier: 1997-1149 Go to resource More Like this...
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