• Telescoping probe is designed to fit into HVAC ducts and small openings
• Probe extends to 7 feet (2.1 m)
• Measuring range 40 to 3940 feet/minute
• Choice of readings in feet/min, meters/second, kM/hour, MPH or knots
• Min/Max and Data Hold

The 407123 Heavy Duty Hot Wire Thermo-Anemometer uses a telescoping probe (extends up to 2 ft) which is ideal for use in ducts and ventilating systems. It can accurately measure Air Velocity and Temperature and simultaneously displays them on the dual LCD. Additional functions include Data Hold and Min/Max measuring modes. Comes complete with telescoping probe with 5.5ft cable, and 6 x AA batteries.