Pessimists only have Min/Min thermometers.............
I agree lincs!
Yes I have one (xmas present) but I see them as a 'shut the door after the bull has bolted' type of equipment.
What good is it to know that it went down to -5° or some such figure?
Its too late then! :-[
I have invested in a thermostat for my heater meaning that when it gets to a pre-determined figure the heat comes on so it is never too late......and it makes my max/min superfluous! ;D 8)