Absolute thermometer

From Object Wiki

Mercury thermometer, reading in degrees absolute
Manufacturer	(unknown)
Production years	c. 1950
Production location	(unknown)

At the time of the Great Storm of 1703, the temperature was measured in inches of mercury or alcohol, up and down from arbitrary zero points – there was no commonly agreed scale. Fahrenheit and Celsius devised the scales most familiar to us today, using the freezing and boiling points of water as fixed references; the absolute scale was devised to avoid having to use negative numbers in calculations, by referring to the ultimate fixed point, absolute zero.

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[edit] In the Science Museum's Records

Inv No: 1995-991