Anemometer-An anemometer is a device for measuring wind speed, and is one instrument used in a weather station. The term is derived from the Greek word, anemos, meaning wind.
Anemometers can be...
Simple: I'm guessing they're just anemometers in the form of cup. A cup anemometer is a device with cups that spin as the wind speed changes. So people probably sometimes call it a cup anemometer...