High Accuracy Measurement: Perfect for wood, lumber, logs, cardboard, paper, concrete and many types of walls. Thanks to sensitive electrode tips, the accuracy is less than 2%.Useful Futions: Large LCD display with value hold function to display measurement results; auto shut-off for less battery cost (battery included).Practical Design: Made of ABS plastic for superior durability, sliding touch on both sides. Compact size and lightweight. Comes with a protective case.Wide Measuring Range: You can also test building material, different building materials with different measuring ranges, such as concrete plaster walls (1.4%-7.4% ), anhydrite wall (0% -4.1%), cement plaster (0.8% -5.1%), limestone mortar (0.4% -3.7%), brick (0.7%), % -8.0%. 5%).