Features: 1. Professionally measure the inner and outer angles and angles of objects 2.0-360 ° complete measurement. 3.Easy to lock at any angle, compact, accurate measurement, easy to read. 4. With a locking knob, convenient to lock the angle at any position. 5. 5 minutes automatically shut down, induction automatically boot. 6.Button function: open / key, clear key, data hold button, degree and degree conversion button Material:Carbon fiber + ABS Size: 0-200mm:about 220mm; 0-300mm:about 317mm. Measuring range: 0-360 ° Resolution: 0.1 ° Accuracy: ± 0.5 ° Working power: 3V Usages: Measurement of angle and length Packing includes: 1* 2-in-1 Digital Angle Ruler. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store