anemometer

Lutron AM-4205A Vane Style Thermo-Anemometer Air Velocity Meter with Hygrometer

Anemometer, Humidity/Temp. and type K/J thermometer meter
The portable anemometer provides fast, accurate readings
Microprocessor circuit assures maximum possible accuracy
air flow measurement: m/s, km/h, ft/min, knots. mile/h.
Dual function meter's display.
Build in temperature , measurement. ℃ ℉
Low-friction ball vane wheels is accurate in both high & low velocities for anemometer.
Thermistor sensor for Temp. measurement, fast responsetime.
Thin-film capacitance sensor for humidity measurement,
Heavy duty & compact housing case.
Records Maximum & Minimum readings with recall
Data hold.