Magnetic attachment: This digital protractor features a robust magnet that securely attaches to metal surfaces, enabling hands measurements. Dual measurement modes: Provides both relative and absolute measurement options, making it suitable for tasks such as measuring angles or checking slopes. Angle and slope conversion: Easily switch between angle readings and slope percentages to meet the needs of construction or carpentry projects that require different measurement formats. Data lock function: A convenient data lock lets you freeze the displayed measurements for easy reading while you work. Applications and use scenarios Carpentry and trim work: Use the dual modes to measure and verify miter angles, set trim angles, or check corner accuracy without repositioning the device. Construction and framing: Attach to metal framing to measure wall angles or verify slopes for stairs, ramps, or roof pitches with quick angle or slope readouts. Onsite alignment and layout: Mount the protractor to metal surfaces to compare relative angles between components, then switch to absolute mode to confirm exact orientations.