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Title: Glass 'streamline' hydrometer marked J W Towers Ltd, Widnes, [Go to resource]
Description: Glass 'streamline' hydrometer marked J W Towers Ltd, Widnes, and bearing serial number 6332. 201mm long. Range 1.250 - 1.300. Lead (embedded in red wax) weight and paper scale. In dark blue cardboard tube, 1930 - 1960. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1930-1960 Source: Science Museum Creator: J W Towers Ltd Identifier: 1997-1093 Go to resource More Like this...
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