1PC 360 Degree Digital Level Protractor Electronic Inclinometer Magnetic Field Angle GaugeFeatures: Ultra-slim size, all aluminum alloy frame structure. Portable design and simple operation. Two strong magnets are built on the side and the bottom surface, which is convenient for horizontal and vertical measurement. High accuracy and resolution. The degree and percentage of slope during conversion. Absolute and relative measurement modes. Large and easy-to-read LCD display.Measured data held. Calibration button to calibrate the meter to any reference surface. The displayed readings remain upright for easy viewing from all angles. Applications:Drive line measurement. Race cars wing and chassis adjustment. Wheel settings. Angles and run-off slopes drainage. Tool setting on lathes. Blade angle setting with circular saws/saw blades with swivel blade. Setting the machined angle for milling. Monitoring platform. Check out a drill table, table saw, router table, band saw, fence milling machine or band saw table. You can even put it in your clothes pocket for field work. Specifications:All Aluminum Alloy Frame StructureTwo strong magnets are built on the side and bottom surfaceRange: 0 - 90 x 4 Squares (360)Resolution: 0.1Operating Temperature: 0 - 40Operating Humidity: 40 - 80% RH Power: 3x3V CR2032 Battery (Not Included)Dimensions: Approx. 52x52x25mm/2.04x2.04x0.98inch Quantity: 1 PcNote:1. The battery should be removed for storage if the instrument will be stored at rest for a long period of time.2. Since this product has only been referring to two x-axis measurements, in the third axis (foot level, front side and back side) and in this horizontal angle was less than 45, the LCD will show the error message "Err". Package Contents:1 Pc x Digital Protractor