Portable digital anemometer — provides fast, accurate readings with digital readout and the convenience of a wired remote sensor Easy to read 3½ Digit LCD Display, 0.7-inch digit height Measures wind speed in m/s, km/hr, ft/min, knots and temperature in °C and °F Data Hold function - stores desired value on display Low-friction ball-bearing design allows free vane movement for accuracy in high and low velocities Sensitive balanced vane wheel rotates freely in response to air flow Suitable for many applications including air conditioning & heating systems, measuring air velocities, wind speeds, temperature, etc. Twisted vane arms sensor Accuracy: 2% + 1 digit Sensor head: 2.8" dia. Equipped with conventional twisted vane arms sensor, it is sensitive to low wind speed and can measure as high as 90 miles/hr. It is used in wind tunnel, heating/air conditioning, and automotive applications. Complete with sensor probe and manual.Product Weight: 0.83 LB