Réaumur

During this year's excursion with the Museumsgesellschaft visiting some cultural highlights on the north bank of Lake Konstanz, I saw two thermometers scaled in Celsius and Réaumur.

In my school years, I remember learning about degrees Celsius, Fahrenheit, and Réaumur. Later in my studies, Kelvin became vital because it is the fundamental temperature scale in physics. Fahrenheit, you still need in the States to choose the proper clothing before leaving the house.

Degrees Réaumur are easily scaled into centigrades by multiplying them by 1.25. Are degrees Réaumur still used? Wikipedia tells you that cooks and pâtissiers still measure temperatures in Réaumur when preparing a sugar solution.

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