Item Type: Digital Display Angle Ruler <br>Material: Stainless Steel <br>Measuring Range: 0-360° <br>Optional Specifications: 200mm; 300mm; 500mm <br>Reading Value: 0.05° <br>Accuracy Error: Plus or minus 0.3° <br>Power: 3V (CR2032 × 1) (Not Included) <br>Key Function: On/Off key clear key, data hold key, degree change key.<br>1、The product is made of stainless steel, which is not easy to rust and has a long service life. <br>2、The scale is engraved by a precision machine. The figures are very clear and easy to read. <br>3、Multi-function Key Function: On/Off key clear key, data hold key,&nbsp;° / ''&nbsp;conversion key. <br>4、 Professionally measure the inner and outer angles and angles of objects. <br> <br>5、With a locking knob to facilitate the locking angle at any position.1 x&nbsp;Digital Display 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.