What is the instrument used to measure force of the wind?
The anemometer measures wind speed, and the wind-vane measures its direction. Those two measurements combine to indicate the wind velocity. Wind force depends on the method and device used to capture wind-power, or the shape and size of the structure against which the wind blows. For any single device or structure, the force of the wind against it is closely related to the wind's speed and direction.
There really isn't something to measure the amount of wind, I believe that you are referring to wind speed and direction. The instruments that are used to measure wind speed is the anemometer. Also, for wind direction, we would use a wind vane. You can feel the direction of wind.... I guess humans are like one giant wind vane!
An anemometer is a device for measuring wind speed, and is a common weather station instrument. The term is derived from the Greek word anemos, meaning wind. The first known description of an anemometer was given by Leon Battista Alberti around 1450. Wind direction is measured with wind (or weather) vanes or wind socks.
An anemometer is used to measure velocity and is the spinning part on a weather station. A weather vane is an instrument for showing the direction of the wind. They are typically used as an architectural ornament on the highest point of a building. On a sailboat, the vane at the top of the mast is called a windex.