Digital Protractor 4*90° Angle Finder Gauge With Magnetic Base Angle Protractor Electronic Inclinometer Angle Bevel Tester Woodworking Tools. Features: Magnetic Attachment Convenience, Relative and Absolute Conversion, Angle and Slope Conversion, Data Lock for Easy Reading, Compact and Portable Size. Specification: Origin: Mainland China, Material: Plastic ABS, Measuring range: 4*90°, Display resolution: 0.05°0.05° (<100°), 0.1° (100°~180°), Accuracy: ±0.1°, Repeatability: 0.1°, Working temperature: 0°C~40°C, Power supply: 2 AAA dry batteries, Product size: about 60.00x60.00x25.00mm. Application: Wood processing, Auto repair industry, Processing.