Magnetic adsorption on the measuring surface, can adhere 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, expands measurement range Measurement range:4 * 90° Display resolution: 0.05° (Less than 100°), 0.1° (100°-180°) Accuracy: ± 0.1 ° Repeatability:0.1 ° Working temperature: 0℃-50℃ Application: 1. Wood processing: precision cutting of wood corners 2. Automobile repair industry: precise control of tire assembly angle 3. Processing: precise positioning of machine tool working angle, rotation angle of boom. Convenient to carry. Fast response speed for measuring numerical values. Backlit LCD display. Power Supply:2 x AAA battery (Not included batteries) Reading value: 0.1 °, measurement accuracy: 0.2 ° Multi purpose measuring tool, three in one protractor, inclinometer, and level ruler. There is a magnet at the bottom that can be attached to the object being measured. Color:Black Material:plastic Package Contents: 1 * Digital Protractor Level Gauge