The speed of the wind is measured by an anemometer. An anemometer is a meteorological instrument used to measure wind speed. Common types include cup anemometers, propeller anemometers, and sonic anemometers. A wind vane measures wind direction, indicating the direction from which the wind is blowing. A wind rose is a graphical tool used to show the distribution of wind speed and direction at a particular location over a period of time. A barometer is used to measure atmospheric pressure.