Casella-Miller Mercury Deep-Sea Thermometer, 1869-1872

Made:
1869-1872 in London
inventor:
James Six

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Casella-Miller mercury deep sea thermometer, London, England, 1869-72. In copper case.

In 1780 James Six (1731 1793), a retired business man, designed a self-registering thermometer to measure and record maximum and minimum temperatures. This popular pattern was used for taking sea temperatures for the next 90 years, when Dr W Miller (1817-1870) modified the design for deeper waters, and had it made by the London instrument maker Louis Casella (1812-1897).

Details

Category:
Oceanography
Object Number:
1876-819
Materials:
alcohol, brass (copper, zinc alloy), copper (metal), mercury, plastic (unidentified), rubber (unidentified), vulcanised rubber (?)
Measurements:
overall (in case): 310 mm x x , 65 mm, .535kg
type:
thermometer
taxonomy:
  • materials
  • materials
  • inorganic material
  • metal
  • nonferrous metal
  • measuring devices
  • measuring devices
credit:
Admiralty Hydrographic Department
status:
Permanent collection

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