Improved brass Clarke's hydrometer

Made:
1820 in London
maker:
Dring and Fage

Improved brass Clarke's hydrometer, made by Dring and Fage, London, no. 14701, with 134 weights, with mercury thermometer with ivory scale, in mahogany case, c. 1820. Hydrometer Index 371.

Details

Category:
Experimental Chemistry
Object Number:
1954-373
Materials:
brass (copper, zinc alloy) and mahogany (wood)
type:
hydrometer
credit:
National Maritime Museum