An anemometer's a device that's used for measuring wind speed, and's one instrument used in a weather station. The term's derived from the Greek word anemos, meaning wind. The first known description of an anemometer was given by Leon Battista Alberti in around 1450. Anemometers can be divided into two classes: those that measure the wind's velocity, and those that measure the wind's pressure; but as there's a close connection between the pressure and the velocity, an anemometer designed for on… (More on Anemometer)