Compact Thermal Anemometer - the compact Testo 425 is an easy to use anemometer with attached thermal probe on a telescopic handle. Just enter the duct measurements directly into the Testo 425 and volume flow measurements (cfm) are shown on the clear display. You can switch between flow and temperature readings easily. Timed and multi-point mean flow calculations allow easy flow analysis, volume accumulation estimates, and temperature variation monitoring. Min-Max values are one button simple, while the "Hold" function freezes the current readings in the display for easy data recording. Features: Flow, volume flow (cfm) and temperature measurements Multi-point and timed mean calculations Max-Min values make comparisons fast and easy "Hold" button freezes readings Clear backlit display Auto Off TopSafe provides water, dirt and impact protection
