Features • Durable Stainless Steel Construction - Built to last, this angle meter ensures long-term reliability and resistance to wear, making it a perfect tool for woodworking projects • Precision Engraved Scale - Featuring a clearly marked scale, the measurements are easy to read, allowing for accurate assessments of angles up to 360°, enhancing your project precision • Versatile Multi-Functionality - Equipped with On/Off, clear, data hold, and °/' conversion keys, this tool simplifies your measuring tasks and adapts to various woodworking needs • Accurate Angle Measurement - Professionally designed to measure both inner and outer angles, this protractor is essential for achieving perfect angles in all your woodworking applications • Convenient Locking Knob - Easily lock your desired angle in place with the built-in knob, ensuring stability and accuracy during your measurements and cuts Features: 1、The product is made of stainless steel, which is not easy to and has a long service life. 2、The scale is engraved by a precision machine. The figures are very clear and easy to read. 3、Multi-function Key Function: On/Off key clear key, data hold key, ° / '' conversion key. 4、 Professionally measure the inner and outer angles and angles of objects. betweenbr> 5、With a locking knob to facilitate the locking angle at any position. Specification: Item Type: Digital Display Angle Ruler Material: Stainless Steel Measuring Range: 0-360° Optional Specification: 200mm; 300mm; 500mm Reading Value: 0.05° Accuracy Error: Plus or minus 0.3° Power: 3V (CR2032 × 1) (Not Included) Key Function: On/Off key clear key, data hold key, degree change key. Package List: 1 x Digital Display Angle Ruler Package List 1 x Digital Display Angle Ruler