風速測量器誕生於十九世紀末。空氣因流通而產生風，而風流動的速度就是風速。 用以量測排油煙機的風速是否符合標準。

The wind speed measuring device was developed in the late 19th century. Wind is generated by the movement of air, and the speed at which it flows is known as wind speed. This device is used to measure whether the airflow of range hood meets the required standards.