University of Oregon
University of Oregon: Temperature Scales
This site from the University of Oregon provides information on the three temperature scales in use today--Farenheit, Celsius, and Kelvin. Historical information is given on the discovery of the scales along with information on the...
US Navy
Naval Research Office: Ocean Water: Temperature Scales
For an overview of the four temperature scales, visit this site. General information is given about the scales including their boiling and melting points.