ITEM NAME:Magnetic Mini LCD Digital Protractor Angle Gauge Electronic Inclinometer Description: Easy to read and calibrate data with the large and clear LCD display. New sensor and high accuracy, resolution and longer battery life. Magnetic base can be attached to iron products and machine tables and so on that is more convenient to operate. Portable design & simple operation. A good tool applicable to carpentry, construction and machine industry. 4 -Buttons: turn ON/ OFF, degree and percentage of slope in conversion; absolute & relative measurement modes; measured data hold. Specification: Material: ABS Plastic Size: Approx. 54x 54x 28mm/ 2.13x 2.13x 1.10inch Measuring Range: 4 x 90Â °(Total 360 degree) Resolution: 0.1Â ° Operating Temperature: 0 ~ 40℃ Operating Humidity: 40 ~ 80% RH Power supply: 3 x 3V CR2032 Batteries (Not Included) Package Includes: 1 Piece Mini Digital Protractor Note: Please allow 1-3mm error due to hand test. The color may have different as the different display. THANK YOU FOR SHOPPING WITH US! Have a nice day!.1 Piece Mini Digital Protractor. Magnetic base can be attached to iron products and machine tables and so on that is more convenient to operate. The color may have different as the different display.