General description The Digital Angle Ruler Protractor is a multifunctional tool designed for high precision measurements. With a total length of 230mm and a 360° angle gauge, it features a horizontal and vertical circle level bubble, an LCD display, and a dual scale ruler. This tool is essential for ensuring accurate readings in various DIY and home improvement projects. Technical specifications Total length: 230mm Power supply: CR2032 3V battery Usage Use the data hold function to "reserve" the angle value by pressing the red HOLD button. Can be used as a spirit level to check and calibrate surfaces (note: it does not display numerical values on the LCD). For optimal performance, replace the battery when the LCD screen flickers or the display is incomplete. Other information Includes: 1x Digital Goniometer, 1x CR2032 Battery, 1x Instruction Manual. Features a hanging hole for convenient storage.