What is a hygrometer?

Question

i need to know what a hygrometer, an anemometer, a weather vane, and a rain gauge does for a huge exam i have tomorrow!

Answer 1

Ring a weather centre . I'm sure they will help . You may even  be invited to look  round, as I was once. At Leeds.

Answer 2

try

Answer 3

Don't you know how to use google?

Answer 4

A hygrometer measures the relative humidity,an anemometer measures the wind speed, a weather vane(or wind wane) gives the direction of wind and rain gauge measures the amount of rainfall over a place.