Product review (5 stars): a useful inexpensive monitor
i use this to monitor the room where i store my guitars. it's easy to read and seems accurate when compared to other devices tested in the same room. Including a very expensive hygrometer used in medical research projects. I even sent one to a guitar buddy of mine so he could protect his acoustic guitar collection. A great price for a useful monitor. guitars should be at about 47% below or above causes cracking of the wood on the body and warping of the fretboard..  thr same would be true for any wooden instrument (violins,piano's etc)