Precision Digital Inclinometer Electron Goniometers Magnetic Base Digital Protractor Angle Finder Be Magnetically attached to the measuring surface, which can be attached to the workpiece under test Relative measurement and absolute measurement conversion Angle and slope conversion Data locked for easy reading Portable size, easy to use with other measuring tools to expand the measuring range specification: 2 AAA dry batteries (the product does not carry batteries) Measuring range: 4*90 degree 2*180 degree Display resolution: 0.05 degree 0.05 degree(Less than 100 degree), 0.1 degree(100 degree~180 degree) Accuracy: ±0.2 degree Repeatability: 0.1 degree Working temperature: 0 Celsius~40 Celsius application: 1 Wood processing: precision cutting of wood corners 2Automobile repair industry: precise control of tire assembly angle three. Processing: precise positioning of the working angle of the machine tool, rotation angle of the boom Colour:black / Red Material:ABS plastic Size:60 x 30 x 55mm Package Contents: 1 * inclinometer 1 * English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.