Wood Moisture Meter, RISEPRO Digital Moisture Meter Non-Invasive Inductive Wood Moisture Tester Water Content GM630 NON-INVASIVE & INDUCTIVE MEHTOD  RISEPRO&reg; Moisture Meter adapts non-invasive and inductive method to measure moisture. Simply scanning through the material for moisture level! No more hard penetration and damage to the material! 8 GROUPS OF WOOD VARIETY  It categories all kind of woods into 8 groups of wood variety based on wood density. It covers most kind of woods. If your measured wood is not included in these 8 groups, you may need to work out the wood density with a formula stated in the instruction manual) and apply into the correct group. CONSIDER THIS FACTOR BEFORE BUYING! WOOD MOISTURE RANGE & ACCURACY  Wide moisture range from 0.5% to 79.5% with accuracy + / - 1.5 value. It works with wood moisture 0.27  1.05g/cm3 as divided into 8 groups of wood variety. HIGH DETECTION DEPTH  It detects up to 2 inches (50mm) depth TEMPERATURE RANGE & ACCURACY  Temp range is 32  122 F (0 - 50 C) with accuracy +/- 3.6F(2C)