Mercury Thermometer for Underground Temperatures, 1861-1881

Mercury maximum thermometer of the Negretti & Zambra inverted

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Mercury maximum thermometer of the Negretti & Zambra inverted
Science Museum Group
© The Board of Trustees of the Science Museum

Mercury maximum thermometer of the Negretti & Zambra inverted type in glass sheath, by Negretti & Zambra, 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.

Details

Category:
Heat
Object Number:
1889-8
Materials:
glass, mercury, copper (metal), iron, brass (copper, zinc alloy), cotton wool and leather
Measurements:
overall: x x , , .345kg
case: 300 x 40 mm
thermometer: 245 mm x x , 24 mm,
type:
thermometer (mercury)
credit:
Negretti & Zambra