Digital Angle Ruler Protractor Ruler Bubble Level Digital Goniometer 230mm 360° Angle Gauges with Horizontal Vertical Circle Level Bubble, LCD Display, Dual Scale Ruler

[360° Measurement & Data Lock] This protractor measures 360° interior and exterior angles and converts between degrees and degrees/minutes. It has a lock button and a reset button. To lock the data, press the lock button. (Rotating the knob only loosens or tightens the angle; it does not lock it completely.)[4 in 1 Multifunction Digital Protractor]: This product integrates a protractor, a level, a circular level and a ruler. It uses three bubble levels for calibration, allowing you to measure angles more accurately. (Note: This is not a digital level; the LCD screen does not display any numerical values. It only indicates whether an object is tilted.)[Large LCD Display and Auto Shut-Off]: This angle protractor has a large LCD display for quick data reading.The digital protractor automatically turns off after 5 minutes of inactivity to save power. Additionally, it has a reset button that allows it to be reset to any position, suitable for absolute and relative angle measurements.【Premium Materials and Portable Design】: The thicker and wider ruler body is made of high-strength glass fiber reinforced nylon. This material is extremely durable, wear-resistant, dimensionally stable and scratch-resistant, while being lightweight and durable. Its compact 230 mm format makes it easy to use and transport.A hanging hole makes it easy to store.【Wide Applications】: This angle measuring tool is widely used in carpentry, architectural decoration, educational establishments, home renovation and machining (especially for adjusting the angles of circular saws, miter saws, band saws, etc.).