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Frey Scientific Sling Psychrometer

By: Frey Scientific Item#: 589686
Frey Scientific Economy Sling Psychrometer is an economical but effective device using the difference in the readings of a wet-bulb and a dry-bulb thermometer to find out the relative humidity. The wet-bulb thermometer is cooled by the evaporation of the water when whirled and shows a lower reading than the dry-bulb thermometer. Comes with a chart for getting relative humidity.

Catalog Price



  • Includes a chart for obtaining relative humidity

What's in the Box

  • Chart


Item #:589686

Brand:Frey Scientific

Selling UOM:Each


Ship Method:Parcel


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Frey Scientific Sling Psychrometer is rated 4.0 out of 5 by 1.
Rated 4 out of 5 by from basic tool at low cost Love this! I did have to glue the thermometer down. Adding the wet sock pulled the probe off the scale and I added a little spot of epoxy to keep it in place. The metal clamp on the glass thermometer has no chance of holding.
Date published: 2018-06-06

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