Review on Thermometer Hygrometer Incubator Greenhouse Temperature by Bud Crabtree

These are very nifty aluminum things that I like. Um, I don't know if they work. I know the temp is about the same as ambient, but I can't confirm the humidity is correct. They all seem to reflect very high humidity, which is what I'm aiming for, but it's hard to believe that 70% humidity remains in an air-conditioned office. But I have no other tool to check! I prefer to use it for car interiors. It's dark, it's June, it's Alabama - fun to complain about my car going 120 degrees.