The VOLTCRAFT FM-300 Wood moisture meter Wood moisture reading range 6 up to 99 vol% Temperature reading has integrated wood characteristics, with this, a specified moisture measurement can be conducted in vol-% for most of the European wood types. Two plug gauges are used for measuring, which are held on or inserted into the material to be measured. Alternatively, measurements with automatic temperature factor correction by means of a measuring probe are possible. The measuring probe can also carry out wood temperature measurements.A calibration tester is integrated into the protective cap. The protective cap must always be snapped on when the device is not in use.