uses degree intervals of the same size as those of the Fahrenheit scale, except that absolute zero is 0 °R the same way that the Kelvin temperature scale matches the Celsius scale, except that absolute zero is 0 K.

The combination of degree symbol (°) followed by an uppercase letter F is the conventional symbol for the Fahrenheit temperature scale. A number followed by this symbol (and separated from it with a space) denotes a specific temperature point