Have the meter for some time and was always happy with it. Well, until yesterday my chimney sweep came along to my new stove decrease. After successful acceptance he wanted to give me a few tips to encourage correct and prepared a small fire in front. Conscientiously he grabbed from his moisture meter and confirmed to me 17.6% residual moisture. Curious, I took out my tested and the same piece. Result: 29%. Incredulous, we made a few more measurements on my wood supply. The result remained the same. Very large differences between the professional device and is mine.
About the big differences am very surprised and make the device useless for me because the values differ widely from reality.