The direction of wind is recorded by an instrument called

The direction of wind is recorded by an instrument called a "wind vane". A wind vane, also known as a weather vane, is a simple device that is typically mounted on a rooftop or tower to measure the direction of the wind. It consists of a flat or curved plate that is balanced on a vertical rod or spindle, with one end of the plate wider than the other. The narrow end of the plate is designed to point into the wind, while the wider end is shaped like an arrow to indicate the wind direction on a compass or other directional scale. Wind vanes are often used in combination with other weather instruments, such as an anemometer for measuring wind speed, to provide a complete picture of atmospheric conditions.