• Accurately measure air flow (CFM/CMM) or air velocity plus-Degrees F/-Degrees C temperature
• Air velocity measurements as low as 40-Feet/minutes
• Telescoping probe is ideal for use in ducts and ventilating systems; extends up to 3-Foot (940mm) long
• Measures air volume in CFM (ft3/min) and CMM(m3/min) plus temperature simultaneously
• Air flow displayed in 2 modes: Instantaneous value or up to 20 point average

The 407119-NIST Heavy Duty CFM Hot Wire Thermo--Anemometer uses a telescoping probe (extends up to 3 ft) which is ideal for use in ducts and ventilating systems. It can accurately measure Air Flow (CFM/CMM), Air Velocity and Temperature. Air Flow can be displayed as an instantaneous value or up to a 20 point average. Additional functions include Data Hold, Min/Max, and Auto power off. Comes complete with telescoping probe with 5.5ft cable, and 4 x AA batteries. Includes certificate traceable to NIST.