ITEM NAME:Stainless steel two-in-one electronic digital protractor woodworking angle F1I6 Description: 100% new high quality Color: as shown Style: as shown Material: Stainless steel Size: 200mm Conversion: 1 inch = 2.54 cm or 1 cm = 0.393 inches Reading value: 0.05 °, accuracy error: plus or minus 0.3 ° 1. Professionally measure the inner and outer angles and angles of objects 2, angle and ruler combined 2 is 1; 3, 0-360 ° complete measurement; 4, with a locking knob to facilitate the locking angle at any position; 5, stainless steel material, not easy to rust. 6, pull the boot; 7, power: 3V (CR2032 × 1), the product does not have a battery 8, button function: open / key clear key, data hold button, degree conversion button. Package includes: 1 * stainless steel angle ruler note: Allow 2-3cm error due to manual measurement The color of the items in the photos displayed on the computer monitor may be slightly different because the display is not calibrated the same.2, angle and ruler combined 2 is 1;. 4, with a locking knob to facilitate the locking angle at any position;. Material: Stainless steel. 8, button function: open / key clear key, data hold button, degree conversion button.