Magnetic attachment: The strong magnet securely attaches to metal surfaces, enabling hands measuring and enhanced accuracy. Dual measurement modes: Provides both relative and absolute measurement modes for a range of tasks, including angle measurement and slope checking. Angle and slope conversion: Easily switch between angle measurements and slope percentages to suit different formats in construction or carpentry. Data lock function: The data lock freezes readings on the display for easy viewing, eliminating the need for manual recording while you work. Use scenarios Roof and deck framing: Attach to steel studs or metal beams with the magnet to measure rafter or deck slope and angle. Switch between relative and absolute modes as needed, and use data lock to capture readings while adjusting. Cabinetry and furniture assembly: Verify precise angles on joints and shelves. Convert between angle and slope formats according to plan requirements, and freeze readings during assembly for accurate documentation. Steel fabrication and alignment: Align components on metal frames or machinery by mounting the device with the magnet for stable readings, and lock in measurements for reference during setup.