If you have spent any time finishing with lacquer, varnish or shellac, you know how important it is to control the air temperature and humidity. Failure to do so can result in a textbook's worth of unpleasant results like blushing, bubbles or orange peel.
This temperature and humidity gauge is nice and big (6" in diameter) so you can see at a glance whether your environment is suitable. The molded frame and glass face are suitable for indoor use. It reports temperatures from 30 to 250 degrees Fahrenheit with an accuracy of +-2% and relative humidity from 0 to 100% with an accuracy of +- 2%. For indoor use only.