Casella-Miller Mercury Deep-Sea Thermometer, 1869-1872
- designer:
- William Allen Miller
- inventor:
- James Six
- maker:
- Casella, L. P.
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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:
- copper (metal), rubber (unidentified), brass (copper, zinc alloy), mercury, plastic (unidentified), vulcanised rubber (?) and alcohol
- Measurements:
-
overall (in case): 310 mm x x , 65 mm, .535kg
- type:
- thermometer and mercury
- credit:
- Admiralty Hydrographic Department
