Features:High-quality material: Made of high-quality material, it is wear-resistant and not easy to break, can be used for a long time, and has excellent workmanship, giving you a good use experience.Dual function: This transparent digital ruler combines two functions: right-angle marking, and internal and external angle measurement, making it easy to use.Digital display: This digital transparent ruler adopts a large-screen digital display design, which can quickly and accurately read angle values.Precise Measurement: Provides precise angle measurement within 0-200mm range. Transparent construction allows for easy alignment on any surfaces.MULTIPURPOSE: Suitable for woodworking, metalworking, engineering and DIY projects.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: plastic (transparent ruler body)Accuracy: 0.05Measuring range: 0-360 degreesSpecifications: 0-200mmPower supply: 1 external 3V (CR2032) button batteryPurpose: right angle scribing/internal and external angle measurement