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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) and 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
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Data in the title, made, maker and details fields are released under Creative Commons Zero
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