Digital Angle Finder Protractor 7 Inch Steel Measuring Ruler with LCD Display Features: Versatile angle measurement tool doubles as a angle finder, a ruler and the level tool to meet all kinds of measuring needs. The protractor has metric(mm) and imperial(inch) measurements on ruler edge, clear scale, easy to use. A practical level tool, horizontal, vertical and circular bubble level help you to check and calibrate. The protractor was packed with a CR2032 battery. Automatic power-off function, save power consumption and extend battery life. Thickened and widened nylon glass ruler with super-strength nylon glass fiber material, good rigidity, wear resistance, no deformation. Specification: Item name: 4 in 1 Digital Angle Finder Protractor Working Temperature: 0℃~ +50℃ Working Humidity: ≤85％RH Working Current: ≤20μA Measuring Range: 0°~999.9° High Resolution: 0.05° Accuracy: 0.5°/ 3' Battery: CR2032 3V (included) Material: Nylon Fiberglass Material Product Weight: 106g/3.8oz Product Dimensions: 230*35*25mm Package Includes: 1 x Digital Angle Finder 1 x User Manual