The S-503 relative humidity generator enables the user to calibrate relative humidity (rh) sensors and transmitters. It can generate and hold rh values from 10 percent to 90 percent in 0.1 percent rh ...

It's been quite humid in the Brazos Valley over the last week, but how might you measure that humidity from home? We have a fun activity that you can do with everyday items. Now bear with me here, but ...

An e-mail from Gary recalls an instrument using thermometers to determine humidity and wants to know what it is. It's called a sling Psychrometer and consists of two thermometers which are fastened ...