Features: The flange angles square with an extended design for portability and wide measurement ranges, easy attachment to flange and pipe surfaces. Make of quality metal, this flange angles tool resists drops, wear, ensuring long lasting performances in harsh environments like construction site and workshops. Perfect for verifying proper flange installation, and measuring horizontal/vertical deviations quickly, enhancing pipeline construction efficiency while reducing rework risks. Simply attach this flange angles gauge to pipe/flange surfaces to detect if sealing faces are perpendicular to the centerlines, preventing leaks caused by angles deviations during assembly. Ideal for oil, chemical, and hydraulic piping systems, especially for right angles calibration of oil/water pipeline flanges, making it essential for pipefitters, welders, and installers. Specifications: Component: Metal Size: 300mm/400mm 300mm: about. 300x300mm/11.8x11.8inch 400mm: about. 400x400mm/15.8x15.8inch Package Includes: 1pc Flange Angles Square note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.