Sea Water Hydrometers, 1840-1908

Made:
1840-1908; 1848-1860 in London
maker:
L Casella and Company

Selection of 5 sea hydrometers, 3 glass, 1 unsigned, Negretti & Zambra, London, with 2 brass hydrometers, Negretti & Zambra and L. Casella & Co., 1840-1908.

Details

Category:
Oceanography
Object Number:
1908-87
Materials:
lead (metal), brass (copper, zinc alloy), glass, paper (fibre product) and mahogany (wood)
Measurements:
overall (on stand): 255 mm x 225 mm x 100 mm, , .39kg
hydrometer: x 205 mm x , 28 mm,
type:
hydrometer and sea water
credit:
Meteorological Office

Parts