Magnetic attachment for stability The digital protractor uses magnetic adsorption to securely grip metal surfaces, providing stable, hands-free operation for precise angle measurement. Flexible measurement options Easily switch between relative and absolute measurement modes to suit different projects, whether you are working at home or on site. Locked data for easy viewing A data lock function keeps readings visible and prevents accidental changes during use, ensuring data integrity. Use scenarios - Mounting metal shelving or framing: attach to a steel surface with magnets to verify level and angles without holding the device. - Cabinet and furniture setup: use relative mode for incremental adjustments, then lock in an absolute reference for repeatable results. - On-site alignment: fix to machinery or metal structures to quickly measure angles while keeping data secure.