How do you measure humidity?

This month the Instrument Choice Scientists will show you how to measure humidity using a Mason's hygrometer, a sling psychrometer and a Kestrel-3000 Anemometer. 

Equipment Used:

1 x Mason's Hygrometer Red Liquid - IC736740

1 x Sling Psychrometer -5~50 Celsius - IC736700

1 x Waterproof Pocket Wind Meter - Kestrel-3000