2 in 1 Digital Protractor - Measures both length and 360 angles, including inner and outer angles. Features a locking function with screws to secure both legs at the desired position or angle. 1 inch Large LCD Display - Electronic digital display allows switching between degrees and minutes using a button. The HOLD button retains measurement data, ON/OFF/Zero button resets readings to zero at any angle, and includes an angle lock button for each measurement. Length, Width and Accuracy - Length measurement up to 400mm; Angle measurement range from 000.0 to 999.9; Accuracy of 0.3; Resolution of 0.1; Full measuring range of 0-360. The ruler body is made from high-quality stainless steel, providing durability, corrosion resistance, and long-term reliability. Excellent Quality - Premium forged stainless steel scale with laser-engraved metric and imperial markings (mm and inch), resistant to abrasion and corrosion. High-Quality Service - For any questions regarding use, installation, or product details, customer support is available. Issues are addressed within 24 hours. The ruler may have sharp edges; gloves are recommended during use. Specifications: Length: 200mm / 8 inches Material: Stainless Steel Working Range: 0-360 Angular Accuracy: 0.3 Working Temperature: -10C to 50C Dimensions: 28.7 x 11.18 x 2.779 cm Average Battery Life: Not specified Weight: 300g Battery: 3V CR2032