4in1 digital gauge tool set Angle gauge tool with digital display reads angles clearly on site, making readings quick and accurate for construction protractors and alignment tasks. Center finder tool with data hold and slope modes. Short press the hold button to enter data hold mode and lock the measurement; long press to enter slope mode. Functions as an electronic digital level. Digital level with slope percentage. Provides slope readouts for precise leveling and angle reference, suitable for a range of tasks. Digital gauges that magnetically attach to the measuring surface and can be attached to the measured workpiece. Serves as a digital inclinometer level for hands use. Use scenarios Cabinet, shelf, and furniture installation: use the angle gauge for precise angle settings, the center finder to locate hinge or screw centers, and the digital level to verify level across the frame. Woodworking and construction alignment: use the angle gauge to set bevels and joints, use the center finder to locate center points on workpieces, and use the digital level for vertical and horizontal alignment. Equipment mounting and vehicle maintenance: attach the digital gauge magnetically to metal surfaces for measurements while leveling or aligning components, and use slope mode to achieve exact inclines where required.