Features: Measuring Range：Softwood: 0%~55%, Hardwood: 0%~35% The humidity readings of drywall and masonry are relative values. Handheld moisture meter can measure four different materials : drywall, masonry, softwood, hardwood. Click the ℃/℉ button to switch the temperature unit, and click the "HOLD" button to lock the humidity value of the measurement object. The measurement speed is fast, the measurement result is accurate, and it will not leave any traces of damage to the measurement object. Small size, portable, lightweight, you can put in your pocket wherever you go. Specifications: Material: ABS Size: approx 132x73x33mm/5.2x3.0x1.3in Precision：Softwood, hardwood, +4% Detection thickness：4/3 inch (20mm) Automatic shut- down：10 minutes VA reverse display color screen：Yes Working current：35mA Operating temperature：0~40°C Working humidity：0%~70% Package Includes: 1x Wood Moisture Meter note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.