This simple sling psychrometer is used to measure relative humidity. Determine dew point and relative humidity with this easy-to-use kit.
Students swing the psychrometer to determine temperature difference between the wet and dry bulbs. By use of a standard graph showing the intersection of lines of dry-bulb and wet-bulb depression, they find the relative humidity.
Includes wet bulb wick, two dry bulb thermometers, and Teacher's Guide with Psychrometric Tables.