Portable design, simple operation. Base plate with 4 integrated magnets for attachment to metal surfaces. Degree and mm/m slope in conversion.High precision and resolution. 4*90 measuring range (total 360). Vertical and horizontal spirit bubbles are equipped. The measured data holds.Absolute and relative measurement modes. Enter the absolute angle measurement mode every time the power is turned on (no matter changing the batteries). Large, clear LCD display with backlight.Large, clear LCD display with backlight. Displayed readings remain upright for easy viewing from all angles. Auto shut off, 3 grade mode switch.0 / 90 prompt tone (B, C). Drop protection, electromagnetic protection level 3. Can be used for machinery manufacturing, construction engineering, communication installation, home decoration, etc.Product Description Made of premium material, convenient, easy to use and operate, wide range of applications, long service life.r Features:r Base plate with 4 integrated magnets for attachment to metal surfaces.r 4*90 measuring range (total 360).r Degree and mm/m of slope in conversion.r Absolute and relative measurement modes.r Enter the absolute angle measurement mode every time the power is turned on (no matter changing the batteries).r Large, clear LCD display with backlight.r Vertical and horizontal spirit bubbles are equipped.r The measured data holds.r Displayed readings remain upright for easy viewing from all angles.r Auto shut off, 3 grade mode switch.r Prompt tone 0/90 (B, C).r Fall protection, electromagnetic protection level 3.Can be used for machinery manufacturing, construction engineering, communication installation, home decoration, etc.r Features:r Material: Aluminum alloy Main color: silver Measuring range: 4*90r Resolution: 0.1r Accuracy: 0.2r Battery: 2 LR03 batteries (not included)r Item Size: 416 * 50 * 21mm / 16.4 * 2.0 * 0.8inr Item Weight: 257g / 9.1ounce Package size: 430 * 58 * 28mm / 16.9 * 2.3 * 1.1inr Package Weight: 314g / 11.1ounces Packing List:r 1 * digital spirit level 1 * User Manual