The AN100 Portable Wind Meter is a reliable and accurate instrument for measuring both wind speed and temperature. The portable wind meter has a 20 point average function for air flow and a Max/Min record. The portable wind speed meter offers a data hold and automatic power off. The super large LCD screen displays both wind speed and temperature simultaneously. Portable wind speed meters obtain a 3% wind speed accuracy reading via a 2.83 inch diameter low friction ball bearing impeller. The portable wind meter has accurate temperature measurements to 4 °F (2 °C).