Made of metal, this flange angle tool is resistant to drops and abrasions, and will last even in harsh environments such as construction sites and workshops Ideal for verifying proper flange installation and quickly measuring horizontal/vertical deviations while reducing the risk of redos Ideal for correcting petroleum and hydraulic plumbing systems, especially petroleum/water pipeline flanges and essential for pipe fitters, welders, and installers The flange angle is square and expanded design for portability and a wide range of measurements, making it easy to install on flange or pipe surfaces Simply attach this flange angle gauge to the pipe/flange surface to detect leaks caused by the misalignment of angle during assembly, the seal surface is perpendicular to the center line, Manufacturer: Pffiocix