Anemometer
Product Details:
Testo 405 is a thermal anemometer with a telescopic handle (max. extension length: 300 mm). It facilitates the measurement of air flow, volume flow and temperature in one. Most suitable for service engineers who have to measure air flows frequently on site with precision. 
Features:
Volume flow calculation up to 99,990 m3/h
Temperature measurement
Ideal for measurements in ducts
Easy-to-read readings thanks to swivel display
Telescopic handle to 300 mm
Sensor protected by rotatable protection cap, 300 mm long telescopic handle