Pipe inspection is an important function of pipe inspection borescopes. These Borescopes are unique in the way that they are very long. Whether this is for a sewer inspection, pipe inspection, orbital welding inspection, or orbital weld inspecition, doesn't matter. These scopes need to be able to see what you need to see with superior clarity and the length that will allow you to see as far into a pipe as you need to be. In addition to it's length, it also needs to be water proof. These scopes are all IP67 water proofing and allowed to be submerged for periods of time.