Feature:1. Basic Specifications: The digital display angle ruler made of stainless steel is not only practical and durable, but also the ruler and protractor are 2 in 1 for easy measurement.2. Digital Calculation: The digital display angle ruler has a clear screen display, which can quickly and easily read the measurement results; the digital calculation system makes the angle and length measurement faster and more accurate.3. Data Lock: This is a digital display angle ruler with data lock function, the data can be rotated and displayed, and can be locked.4. Locked Device: The digital display angle ruler has a well designed locking device, simply release your hands and lock the angle with a slight twist.5. Multifunctional Angle Ruler: Protractor is definitely a convenient supplement to any toolbox, widely used in automobiles, meters, construction, shipbuilding, woodworking, engineering, etc.Specification:Item Type: Digital Angle Finder RulerModel: PD290Material: Stainless SteelUses: Automobiles, Instruments, Construction, Shipbuilding, Woodworking, Engineering, etc.Battery: 3V CR2032 x 1 Button Battery (without Battery)Measuring Range: 0-360Scale Unit: Metric Scale, Imperial ScaleGraduation Value: 0.05Accuracy: 0.3Repeatability: 0.05Switch Key: ON OFFClear Key: ZEROLock Data Key: HOLD (Short Press this Key)Rotating Display Key: Rev (Long Press this Key for Three Seconds).Package List:1 x Digital Display Angle Ruler