Soldato
Or you can pick up a fridge thermometer for about £3
My fridge no longer has a knob...
What would happen if you boiled a kettle in a freezer?
Why can't they just stick a gradient scale of blue to red like they do on taps, that would be much less confusing. Perhaps I'll start an internet campaign.
Do you, by any chance, have a PhD in Stupid?
It would take longer to boil, probably not significantly longer but a bit longer as the rate of heat loss would be greater.