3in1 digital protractor: combines a precise protractor, accurate inclinometer, and reliable level in one compact device. The magnetic base securely attaches to metal surfaces, and the backlit LCD display provides clear readings in low light for a variety of measuring tasks. Widely applicable across industries: ideal for woodworking for precise corner cuts, auto for tire alignment, and construction or home improvement tasks, delivering reliable measurements across various materials and surfaces. Precision measurement and versatile modes: professionalgrade accuracy with ±0.2 degrees precision and 0.05 degrees resolution. Features relative and absolute measurement modes with quick conversion between angle and slope. The data lock function freezes readings for easy recording, and fast response time supports efficient workflow. Portable and expandable measurement system: compact design integrates with other measurement tools to extend your measuring range. With repeatability of 0.1 degrees and intuitive operation, it enhances efficiency for professionals and hobbyists tackling precision measurement challenges.