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Title: Glass hydrometer for battery acid and marked D P Battery Co [Go to resource]
Description: Glass hydrometer for battery acid and marked D P Battery Co Ltd, Bakewell. 188mm long. Range 1.150 - 1.300. Lead (embedded in red wax) weight and paper scale. Date of manufacture 1920 - 1960. In violet-cloloured cardboard tube. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: hydrometer Temporal: 1920-1960 Source: Science Museum Creator: D P Battery Co Ltd Identifier: 1997-1131 Go to resource More Like this...
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