Anemometers are device that design for measure wind speed, mostly use for measure weather, meteorology, aerodynamics and air flow measurement. In additional anemometer used to calculate in air system such as ventilation system in tunnel, flight test system, air navigation and air conditioning.
Air velocity Measurement Unit of Anemometer
⇛ Meters per second (m/s)
⇛ Kilometres per hour (km/hr)
⇛ Feet per minute (ft/min)
⇛ Miles per hour (mph)
⇛ Knots 
Air volume Measurement Unit of Anemometer
⇛ Cubic feet per minute (CFM)
⇛ Cubic meters per minute (CMM)