Hydrometer, brass, in wooden case

Made:
1801-1900 in London
maker:
Joseph Long
Hydrometer, brass, in wooden case, with thermometer, Sikes

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Hydrometer, brass, in wooden case, with thermometer, Sikes
Science Museum Group
© The Board of Trustees of the Science Museum

Hydrometer, brass, in wooden case, with thermometer, Sikes, by Joseph Long of London, 19th century