No battery digital display Angle ruler black transparent stainless steel two-in-one plastic Angle ruler protractor digital

Material:Carbon fiber + ABS Length:0-200mm (8inch) Width:35mm / 1.38in Measuring range: 0-360 ° Resolution: 0.05 ° Accuracy: ± 0.05 ° Working power: 3V Battery model: CR2032 Operation time: 5,000 hours Operating temperature: 0 °C - +50 °C Working humidity: ≤85% Automatic closed screen time: 6min Usages: Measurement of angle and length Packing includes: 1* angle ruler

100% brand new and high quality Professionally measure the inner and outer angles and angles of objects Easy to lock at any angle, compact, accurate measurement, easy to read. With a locking knob, convenient to lock the angle at any position. Button function: open / key, clear key, data hold button, degree and degree conversion button