Affordable humidity/temperature monitor. Experienced luthiers try to maintain 40-50 percent relative humidity in their shops, the range at which wooden stringed instruments are most stable. Excess dryness causes wood to shrink and crack. Too much moisture can cause wood to swell, and newly-sprayed finishes to blush.
The easy-to-read display provides relative humidity and Fahrenheit/Celsius temperature at a glance. A memory function stores minimum and maximum daily readouts. Unlike analog gauges, the unit has no imprecise moving parts and never needs calibration. It operates between 20-99 percent relative humidity, with reliable accuracy to 1 percent.
A handy magnetic mount and battery are included. Dimensions: 3-1/2" x 1-1/4" x 1/4" (90mm x 32mm x 6mm). Super-slim to fit in your guitar case, too! 5-year manufacturer's warranty.