Dew Point Hygrometer
An instrument used for determining the dewpoint.
Operates on the principle that air in contact with a polished metallic surface is cooled to a point where a thin film is observed to form on the metal surface, where upon the temperature of that surface is measured. This observed temperature is essentially the same as the theoretical dewpoint.
See also: Dew Point, Hygrometer, Psychrometer.
Subjects: Instrumentation Meteorology