General Tools HWA4204 Hot Wire Anemometer is a hot wire anemometer for lower velocity measurements. General Tools HWA4204 Hot Wire Anemometer telescoping probe is ideal for measuring in HVAC ducts and other small vents with the anemometer probe extending up to 4 ft. Formerly Mannix Instrument.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
