HUM-HYG-CHR Humistat Hygrometer, Chrome
Take the guesswork out of protecting your instrument. All you need to do is to check the level of humidity and then, if necessary, easily adjust your Humistat-brand humidifier to release more or less humidity.
Lets you know immediately whether the humidity in your instrument case is too low or too high.
Hygrometer: 1-3/4″ Diameter by 5/8″ Deep