Baumé hydrometer
Date: 1821-1840
Inventory Number: DW0224a
Classification: Hydrometer
Subject:
Maker: Joseph Long (fl. 1821 - 1846)
Cultural Region:
Place of Origin:
Dimensions:
16.7 x 4.5 cm (6 9/16 x 1 3/4 in.)
case: 23.1 x 6.6 x 6.6 cm (9 1/8 x 2 5/8 x 2 5/8 in.)
Accessories: cylindrical metal container
Description:
A hydrometer consisting of a metallic piece that begins as a a straight narrow rod, them becomes a hollow sphere following which there is a narrow neck and a smaller oblong weight at the end.
The long narrow part is marked with scale that goes between 0 and 25. There is a companion hydrometer (DW0224b) to this one, whose scale picks up where this one ends.
The long narrow part is marked with scale that goes between 0 and 25. There is a companion hydrometer (DW0224b) to this one, whose scale picks up where this one ends.
Signedin italics: J. Long, Little Tower St London
Inscribednear scale: Degrees of Beaumes
FunctionThis device determines the specific gravity of liquids. When placed inside a liquid, it floats upright and the point of the scale coinciding with the liquid's surface indicates the specific gravity, in this case in Baumé units.
