Celsius

The Celsius scale (also known as centigrade) is a temperature scale named after the Swedish astronomer Anders Celsius (1701-1744), who developed a similar scale. From 1744 until 1954 0°C was defined as the freezing point of water and 100°C as the boiling point (at standard atmospheric pressure).

Delisle

The Delisle scale in a temperature scale named after the French astronomer Joseph-Nicolas Delisle (1688-1768), who invented it in 1732. The freezing point of water is set at 150°D and the boiling point at 0°D.