- Yellow Jacket 69010 Sling Psychrometer
- Streamlined, compact tool
- Measures wet and dry bulb temperatures of surrounding air for immediate conversion of readings to relative humidity percentage
- One piece unit with self-contained housing fits into your pocket
- Calibrated and easy-to-read
- "Slide rule" scale is part of the case
- Accurate to 1 percent of "Hygrometric Tables"
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.