Kentucky Windage is the practice of applying a horizontal adjustment of the point of aim for wind (windage) without the use of any physical or mechanical adjustments on the weapon.
dan's girlfriend is such a windgemop, always getting up in everyone's business about her opinions and complaining about almost everything. i hope he's not bringing her tonight
Plain and simple: an anemometer.
An anemometer is an instrument used for measuring wind speed.
Winds were clocked with my stupid sodding "rotten cat pee yellow" portable digital "windometer" (as JD from JD Quad in the UK calls them even though those things are actually called, "anemometers") ;-) as being variable to 3.60mph (4.36kph) at the surface.