psychrometer

Noun
  1. A hygrometer consisting of a dry-bulb thermometer and a wet-bulb thermometer;
    Their difference indicates the dryness of the surrounding air (synset 104023965)
    is a type of: hygrometer - measuring instrument for measuring the relative humidity of the atmosphere
    has:
    • dry-bulb thermometer - an ordinary thermometer with a dry bulb; used to measure the air temperature
    • wet-bulb thermometer - a thermometer with a bulb that is covered with moist muslin; used in a psychrometer to measure humidity

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