Digital Protractor Angle Gauge LCD Display For Woodworking, Construction Etc.2 ☑in 1 Digital Protractor - Both for Length and Angle☑Measurement Convenient Locking Screw - By pressing the locking button, the ruler can be held at any angle☑LCD Display - Provides clear readings☑High Quality - IP54 waterproof stainless steel body provides many years of use Main Features 2 in 1 Digital Protractor - Stainless steel digital ruler and angle finder make precise measurements. The hinge mechanism on the angle rule allows for complete 360 degree measurement of interior and back angles; The protractor combines standard and metric scales, providing relative and absolute angle measurement. Large LCD Display & High Precision-This digital protractor is equipped with a large LCD display for easy reading. Measuring range: 0-360°; Accuracy ± 0.3°; 0.05° resolution. Locking Function-Convenient Locking Screw--By pressing the screw, the ruler can be held at any angle. To maintain accuracy and easy to read, the angle finder can be locked to any angle.-Simple OperationThere are 4 buttons on the protractor, an on/off key, a reset key, a data hold button and a lock button. Just press them to operate, even a beginner can quickly learn how to use it. Durable Use-The digital protractor is made of high-quality stainless steel, good rigidity, wear-resistant, no deformation, can be used for a long time. Large standby capacity with automatic, large power-off function, saving power consumption and prolonging battery life. How do I install the battery? SpecificationsProduct weight0-200mm: 221G0-300mm: 340G0-500mm: 482GTyp0-200mm0-300mm0-500mmPackage ContentsDigital Protractor × 1MaterialStainless SteelWaterproof LevelIP54Measuring Range0-360°, You can mention them± 0.3°Resolution0.05°Battery3V CR2032 Battery (Not Included)NoteAlthough the protractor is waterproof, do not use it in water. Due to manual measurement, please allow slight deviations in the measurement.