but every time I mention a temperature my wife says "What is that in real degrees?", and I have to do a conversion for her. It's being going on for years, and she shows no inclination to familiarise herself with the Centigrade scale.
Even my car, which is German, can't make its own mind up - it helpfully offers me the option to choose between the two scales for the dashboard display.
I always have to 'convert' C to F or I am unsure if it is going to be hot or just warm. Funnily enough I don't have a prob with freezing weather (-1 centigrade)
There are more temperature scales in use. The UK adopted Celsius as part of Metrication in the 70's * 1 Kelvin * 2 Celsius (Centigrade) * 3 Fahrenheit * 4 Rankine * 5 Delisle * 6 Newton * 7 Réaumur * 8 Rømer