Mercury Thermometer for Underground Temperatures, 1861-1881
- designer:
- Joseph David Everett
- maker:
- F M Stapff
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Slow-action thermometer designed by Stapff & Everett and made by Negretti & Zambra, sealed in a glass sheath and with the bulb insulated by tallow or stearine, with outer copper case, as used by the British Association between 1868 and 1881 to measure the rate at which the temperature of the Earth increases with depth. London, England, 1861-1881.
Details
- Category:
- Heat
- Object Number:
- 1889-9
- Materials:
- cotton thread, cotton wool, glass, iron, leather, mercury and tallow or stearine
- Measurements:
-
case: x 300 mm x , 40 mm,
thermometer: x 255 mm x , 24 mm,
- type:
- thermometer (mercury)
- taxonomy:
-
- measuring devices
- measuring devices
- credit:
- Negretti & Zambra
