Answer:

anemometer

AnswerCrossword Clue
ANEMOMETERWeather station gadget
ANEMOMETERWind-speed measurer
ANEMOMETERKid's science project, maybe
ANEMOMETERMeteorlogist's machine
ANEMOMETERSpinner in the wind
ANEMOMETERWind gauge.
ANEMOMETERInstrument showing wind velocity.
ANEMOMETERWind-speed recorder
ANEMOMETERWind gauge
ANEMOMETERWeather instrument
ANEMOMETERThis measures wind speed
ANEMOMETEROne receiving measured blows?
ANEMOMETERWind instrument