I recently researched this topic when working on a post for a series on temperature measurements. Basically Celsius referenced 0 for freezing, and 100 for the boiling point of water. While Fahrenheit used different points of the coldest solution in his lab for 0, and his body temperature for 96. At first I wondered why 96, and it turns out he choose 96 because it was divisible by 12 for the reasons mentioned above.
Great post! --3D
RE: The Curious Case For Base 12 (Why Dozens Are Easier For Everyday Maths Than Tens)