This provides accurate values of Relative Humidity (RH) and Dewpoint from the wet and dry bulb temperatures of a Whirling or Sling Hygrometer - such as the Elcometer 116 range.

The range of the Elcometer 114 is -10ºC to 50ºC and it has an accuracy of ±1% of standard tables.

The calculator includes a ºC to ºF converter.