Feature: 1. High Accuracy: This digital angle ruler supports angle measurement from 0 to 360 degree, and it adopts capacitive displacement transducer, which ensures ±0.3 degree high accuracy. 2. Angle and Length: This angle measuring tool is designed with ruler scale, with mm and inch units, thus it does great help for measuring angle and length, 3. Lock Function: This digital angle finder features lock function that allows angle finder to be locked at any angle, which provides great convenience. 4. Stainless Steel: This digital angle gauge adopts stainless steel material, which ensures high hardness and long service life. Powered by a 240mAh CR2032 battery (Inbuilt Battery Included). 5. Portable Size: This angle finder tool is featured with compact size and light weight, which fits easily into your backpack, storage bag and tool box. Specification: Item Type: Digital Angle Ruler Material: Stainless Steel, Plastic Battery Type: 1 x CR2032 (Inbuilt Battery Included) Voltage: 3V Battery Capacity: 240mAh Measuring Range: 0 to 360 Degree Operating Temperature: 0 to 50℃. Package List: 1 x Digital Angle Ruler