Convenient and Portable This digital mini protractor is small and lightweight, making it convenient to carry and use. Powerful built-in magnets on the base securely attach it to any ferrous surface – saw tables, band saws, metal bars, round pipes, etc. – quickly and easily. This protractor is especially useful for completing work on ladders, roofs, or other precarious locations. High Accuracy The protractor boasts 0.1° accuracy, a 360° (4*90°) measurement range, and 0.1° resolution. Readings stabilize quickly and the number doesn't fluctuate. Absolute/Relative Angle Measurement Our inclinometer measures both absolute and relative angles, making this protractor simpler and faster for everyday and technical applications. Multifunctional The protractor features a large LCD screen, a powerful base magnet, and an upright display for easy and clear reading.