The Model 116 Whirling Hygrometers use a manual technique to measure Relative Humidity (RH) and dew-point. These instruments consist of two thermometers, the bulb of one being covered by a wick.
mercury) Whirling Hygrometers are available in either Celsius or Fahrenheit scales. A guide for Relative Humidity (RH) calculation is supplied with the instruments.




























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