360degree measuring range (4 x 90°) enables slope angle measurement across the full circle for versatile use. Absolute angle measurement feature provides accurate testing of surface levelness in any orientation, reducing guesswork. Large, clear LCD with backlight offers easy, upright reading from various angles, even when the protractor is flipped. Zero reference surface lets you set a base plane as zero to measure relative angles and obtain precise slope angle results. Benefits: improves accuracy and repeatability in layout and setup, reduces rework from misalignment, and supports quick, intuitive measurements without complex steps. Practical applications: Woodworking and cabinetry: verify panel squareness, align edges, and confirm level or precise angles for hinges and joints. Construction and flooring: check substrate slope, confirm level installations, and ensure proper drainage or tilts where needed. Machinery alignment and maintenance: establish a reference zero and align components to a true plane for accurate calibration and setup.