Velocity can be divided into three categories; low speed (thermal probes), medium speed (vane probes) and high speed (Pitot tube). Testo has a wide range of anemometers
The testo 405 is a thermal anemometer with a telescopic handle ideal for measuring velocity, volume flow and temperature. The testo 410 pocket line vane anemometer measures air speed and temperature for quick spot checks at air ducts.
The testo 417 large vane anemometer is compact with a built-in flow/temperature vane to measure flow speed, volume flow and temperature.
Testo 425 compact thermal anemometer directly shows volume flow in the display and offers accurate volume flow calculation. In addition it is possible to switch to current temperature reading.