When you do this, you disable the power meter, map, and wind speed indicator.
We measured the wind speed using an anemometer - see how we made our own here.
More rapid changes in wind speed may be measured using a ` hot wire anemometer ' .
anemometer mast to gage wind speed data over a given period.
Most weather stations measure wind speed using a spinning cup anemometer, which rotates depending on the wind.