Only for the smart.

[Zephyr of Darkness]

I mean you used the same way of thinking it out, only that you used Kelvin/Celsius/Fahrenheit instead of Celsius/Fahrenheit like I did. Though it's true that the Kelvin scale is the best for measuring cold, it's exactly the same if you use centigrades. One starts from the absolute zero, and the other has a zero at the point that water freezes, but it's the same thing. I am not good at Fahrenheit, but converting Celsius and Kelvin is possible and easy:0 Kelvin=-273 Celsius. And yeah, you have a point when you say you don't measure cold; you measure heat. But I guess there is a way of measuring cold by turning the question around.