which of the following instruments is used to measure wind Speed

The instrument used to measure wind speed is called an anemometer. An anemometer looks like a small weather vane with cups attached to it. As the wind blows, it rotates the cups. The faster the cups rotate, the faster the wind speed. The anemometer is usually placed on a high pole or tower to measure the wind speed at a certain height above the ground. The anemometer can measure wind speed in a variety of units, including miles per hour (mph), meters per second (m/s), and knots. Some anemometers may also measure wind direction and temperature. To sum up, an anemometer is a device that measures wind speed, and it does this by using cups that rotate as the wind blows past them.