Rod Reading |link| - Metro

In the world of underground construction, utility locating, and directional drilling, few skills are as fundamental—and as misunderstood—as "metro rod reading." While the term might evoke images of subway systems, it actually refers to a specialized technique used with magnetic locators to trace the exact position and depth of buried ferrous (iron or steel) objects, such as gas lines, water mains, and tracer wires attached to plastic pipes.