While launching gliders at Front Royal, VA (KFRR) over the weekend, a fellow pilot and I got curious about the airport's weather equipment. We know that KFRR has local equipment to measure wind speed and direction. There is a screen in the FBO that shows a graphical readout of the wind situation. However, it was not obvious looking at the equipment itself how this is done.
Here are two pictures I took:
Nothing on either of these two pieces of equipment was actively spinning or being visibly affected by the wind. At the time we has a 10-12 knot headwind almost directly down the runway. This equipment is ~40 feet to the left of the runway threshold.
Question: Is one of the pieces of equipment I've photographed responsible for measuring wind speed? If so, how?