400mm Digital Protractor Angle Finder Electronic Level 360 Degree Inclinometer with Magnets Level Angle Slope Tester Ruler Digital Spirit Level

Features:
Base plate with 4 built-in magnets for attaching on metal surfaces.
Portable design, simple operation.
High accuracy and resolution.
Measuring range of 4 * 90 (total 360).
Degree and mm/m of slope in conversion.
Absolute and relative measurement modes.
Enter absolute angle measurement mode every time being turned on (no matter change the batteries).
Large and clear LCD with backlight.
Vertical and horizontal spirit bubbles are equipped.
Measured data hold.
Displayed readings remain upright to enable easy viewing at all angles.
Automatic shut-down, slope 3 modes switch.
0 / 90 prompt tone (B, C).
Fall protection, electromagnetic protection level 3.
Can be used for machinery manufacturing, construction engineering, communication installation, home decoration, etc.