Crossword Clue:

an instrument for measuring wind velocity

AnswerCrossword Clue
RHEOMETERInstrument for measuring velocity of flow.
ANEMOMETERInstrument showing wind velocity.
UTUBEPart of an instrument measuring fluid pressure
OBOE"An ill wind ..." instrument
OBOEInstrument called "an ill wind that nobody blows good"
BASSOONWind instrument pitched an octave lower than its smaller cousin