Lets have a look at the Digital Anemometer which is a device used to measure the velocity or speed of air in both confined and unconfined flows, such as atmospheric wind and airflow in ducts. For improved data processing, an anemometer can measure atmospheric effects such as wind speed, temperature, and humidity. Digital Anemometer is available in some ranges like Anemometer, Digital Air Velocity Monitor, and Lutron Air Flow Anemometer. This uses changes in a fluid's physical properties or its impact on a mechanical device put into the flow to determine the air velocity. This device is very effective and economical to use.