Anemometer

An instrument designed to measure wind speed.

Anemometer Instrument which measures wind speed or wind speed and direction. Cup anemometer is used to measure the wind speed from the speed of rotation of a windmill which consist of 3 or 4 hemispherical or conical cups, each fixed to the ends of horizontal arms attached to a vertical axis. Byram anemometer is a variety of the cup anemometer. Counting anemometer has cups or a fan whose rotation is transmitted to a technical counter which integrates directly the air movement speed. Hand anemometer is small portable anemometer held at arm's length by an observer making a wind speed measurement. Pressure tube anemometer (Dines anemometer) is an instrument which derives wind speed from measurements of the dynamic wind pressures. Wind blowing into a tube develops a pressure greater than the static pressure, while wind blowing across a tube develops a pressure less than the static. This pressure difference is proportional to the square of the wind speed.

An instrument for measuring the force or velocity of wind; a wind gauge.

An instrument used for measuring the speed of the wind.