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Frey Scientific Sling Psychrometer

Item #: 589686
$13.69 $10.27
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In Stock - Typically Ships Within 2-3 Days
Frey Scientific 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.
  • Includes a chart for obtaining relative humidity
  • Chart