also can be used in:Pipe, Pipeline, Drain, Sewer Lines, Ducts, Tanks, Water Leak, Exhaust Vests, Tubes, Chimneys, Industrial Lines, Confined Space Investigation, Heat and Colling Lines, Attics, Wells, Underwater, Maintenance of the Plumbing and Wiring Behind Walls, Channel and Drain Lines, Sewage Tanks, Ventilation Shafts, Civil Engineering, Electrics Installation Shafts, Cavities, Rescue Areas.