Feature:   The magnet is adsorbed on the measuring surface and can be attached to the measured workpiece   Conversion between relative measurement and absolute measurement   Angle and slope conversion   Data locking for easy reading   Portable size, easy to use with other measuring tools to expand the measuring range.               Specification:   Material: Plastic ABS   Size: 60*30*55mm/2.36*1.2*2.1in   Measuring range: 4*90°2*180°   Display resolution: 0.05°0.05°(<100°), 0.1°(100°~180°)   Accuracy: ±0.2°   Repeatability: 0.1°   Working temperature: 0°C~40°C   Color: Black, Red Black               Instruction:            1.Easy to carry.   2. Fast response to measured values   3. Backlit LCD display.   5. 2 x AAA dry batteries (NOT Included)   6. 4*90° measuring range   7. Reading value: 0.1°, measurement accuracy: 0.2°   8. Multi-purpose measuring tool, three-in-one protractor, inclinometer and spirit level   9. There is a magnet at the bottom, which can be attached to the object to be measured.               Application:   1. Wood processing: precision cutting of wood corners   2. Automobile repair industry: precise control of tire assembly angle   3. Processing: precise positioning of the working angle of the machine tool, rotation angle of the boom