Compact Sling Psychrometer Relative Humidity Meter
Part No. 12-7012 Sling psychrometers are known for great accuracy, dependable results within about 90 seconds, and independence from batteries. The procedure is simple enough: wet the wick, swing the instrument until the wet bulb reading goes no lower, then take the wet-bulb and dry-bulb readings to the tables or slide rule supplied to determine relative humidity. It's a traditional and always reliable process. When not in use, the thermometer case telescopes into the handle for protection.
Features & Benefits
Designed for portability (7.5" long x 1" diameter)
Slide rule construction quickly converts temperature to relative humidity
Built-in water reservoir holds sufficient water for several hours of testing
Thin bulb design gives fast thermal response
Thermometers constructed of shock-resistant glass; stems have deep-etched numerals and 1° scale divisions for easy reading