FNIRSI index humidity meter WMT-10 hygrometerFNIRSI WMT 10 indicative moisture meter hygrometer The FNIRSI WMT 10 is an advanced, non invasive moisture meter that provides fast and accurate readings without puncturing surfaces. Thanks to its induction technology and four measurement modes, it will work well with wood, as well as for testing walls, floors or building materials. High resolution (0. 1%) and a wide measurement range of up to 75% allow precise results in just seconds. The large 2. 4"