Features: Neodymium magnetic base, has very good magnetic attraction to the measured workpiece, which makes your work more worry-free. Precision machined with conversion of 2 measurement modes: absolute angle measurement and measurement of relative angle and two vials (90 and 0 degrees). Degree / percentage of slope conversion. Hold measured display values, easy to read. LED display can be flipped automatically. Automatic shutdown after continuous non-use, so it won't waste battery power. Portable size, easy to use with other measuring tools, expanding the measuring range . Repair of wood processing vehicles; Machining Note: There is about 0.05 deviation. The measurement value keeps changing due to the slight vibration. The measurement value will disappear if the measurement position has changed after measurement. Specifications: Materials: ABS Color: Green Measuring range: 4*90 2*180 Resolution: 0.050.05 1000.1100-180 Package size: 13*4.5*2.5cm Package weight: 72g Battery type: 1.5V AAAx2 Operating temperature: 0C-40C Relative humidity: 40%-80% Package List: 1 * Protractor 1 * Operation Instruction.