Fahrenheit scale was proposed in 1724 by Daniel Fahrenheit.

Fahrenheit temperature scale is based on the water's freezing temperature (32 F) and the water's boiling point (212 F). There are 180 degrees between these points on the Fahrenheit scale.

Before the 1960s Fahrenheit was the standard scale for medical, climatic and industrial purposes in English-speaking countries. Today, Fahrenheit scale is not widely used. Fahrenheit is still used for non-scientific purposes (cooking, weather forecasts, freezing temperatures) in the USA and a some other countries. In the most countries Fahrenheit has been changed to the Celsius temperature scale.