Killer, I agree with you. Navitrack by Ridgid is great! I own two of the to go along with our Ridgid See Snake.
USP45...Locators will not locate Plastics, They will trace steel, copper, aluminum, any electrical line as long it has current. What Plumberman was refering to when locating buried sewer piping is that you may need to push a signal transmitter into the line and locate the signal. Some Camera's come with transmitters in them, transmitting at 516hz.