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