Magnetically attached to the measuring , 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: Measuring range: 4x902x180 Display resolution: 0.050.05( Less than 100), 0.1(100~180) Accuracy: 0.2 Repeatability: 0.1 Working temperature: 0C~40C 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 1.Easy to carry. 2. Fast response to measured values 3.Backlit LCD display. 4. 2xAAA dry batteries (the product does not contain batteries) 5. 4x90 measuring range 6. Reading value: 0.1, measurement accuracy: 0.2 7. Multi-purpose measuring tool, three-in-one protractor, inclinometer and spirit level 8. There is a magnet at the bottom, which can be attached to the object to be measured. size:60x30x55mm Material:plastic colour:Black Package Contents: 1 x Digital Goniometer Only the above package content, other products are not included. Note: Light 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.