Feature: 1. Multi-purpose Angle Gauge with 3 button functionality includes A Zero features to determine relative angles, Hold features to freeze readouts and ON/OFF to power on/off. 2. ABS Plastic enclosure, light weight, portable size and durable. 3. Digital Angle Gauge is great for precision angle measurements. Suitable for calculating in helicopter/ bevel angle of miter saw/ automobile test and repair; hanging pictures on the wall, setting decorative bricks in the garden, etc. 4. Relative / absolute measurement interchange at any position. 5. Angle and slope readout conversion. LCD Display improves visibility. 6. With built-in magnets in measuring surface, which is convenient to be attached to the object measuring workpiece. 7. Power-off automatically in 5 minutes. Specification: Specifications: Wide measuring range: 0 ~ 360° Accuracy: ±0.1 Resolution: 0.1° Power Supply : AAA*2 (not included) Size : 56*56*30mm Weight: 70g . Package List: 1 x Digital Protractor