from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An instrument that uses the difference in readings between two thermometers, one having a wet bulb and the other having a dry bulb, to measure the moisture content or relative humidity of air.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of several instruments used to measure the relative humidity of the atmosphere; especially a wet-and-dry-bulb hygrometer.

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for measuring the tension of the aqueous vapor in the atmosphere, being essentially a wet and dry bulb hygrometer.

from The Century Dictionary and Cyclopedia

  • n. An instrument for determining the tension of the aqueous vapor in the air or the relative humidity.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a hygrometer consisting of a dry-bulb thermometer and a wet-bulb thermometer; their difference indicates the dryness of the surrounding air


from Wiktionary, Creative Commons Attribution/Share-Alike License

psychro- + -meter


  • Twelve ordinary standard (psychrometer -) thermometers, divided to fifths of a degree (Centigrade).

    The South Pole~ Remarks on the Meteorological Observations at Framheim

  • Temperature and humidity readings have been collected using a sling psychrometer, a simple device containing two mercury thermometers.

    Mount Washington

  • Where most unstaffed weather stations have undergone technology upgrades, consistent use of the sling psychrometer has helped provide scientific precision to the Mount Washington climate record.

    Mount Washington

  • To use the sling psychrometer, the wick is moistened with clean water and the device is twirled in the air using the handle.

    Atmospheric humidity

  • A sling psychrometer is a device that consists of two thermometers joined to a piece of plastic or metal (Figure 2).

    Atmospheric humidity

  • Relative humidity is often determined using a sling psychrometer or a hair hygrometer.

    Atmospheric humidity

  • Most of these people have no idea how to use a sling psychrometer or calculate a dewpoint temp from a wet bulb reading.

    Green Alps #1 « Climate Audit

  • Re #202- Most weather stations in the past either used a sling psychrometer or had a piece of equipment called a TMQ-11 to get a dry bulb reading.

    Letter to NAS « Climate Audit

  • * To fashion the sling psychrometer, fasten wet gauze to the bulb of a thermometer, tie it to a cord, and twirl the thermometer at the end of the cord.

    Chapter 6

  • Fashion a simple sling psychrometer and demonstrate its use.

    Chapter 6


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  • Hmmmm.

    June 13, 2009