Perfect for verifying proper flange installation, and measuring horizontal / vertical deviations quickly, enhancing pipeline construction efficiency while reducing rework risks Ideal for oil,, and hydraulic piping systems, especially for right angles calibration of oil / water pipeline flanges, making it essential for pipefitters, welders, and installers Simply attach this flange angles gauge to pipe / flange surfaces to detect if sealing faces are perpendicular to the centerlines, leaks caused by angles deviations during assembly The flange angles square with an extended design for portability and wide measurement ranges, easy attachment to flange and pipe surfaces Make of metal, this flange angles tool resists drops, wear, ensuring long lasting in harsh environments like construction site and workshops, Manufacturer: YUEHUINIAO