Tinker & Rasor Model T-1 is a three-terminal Cathodic Protection Test Station available from stock. It is made of UV-stabilized, fire-resistant and-impact resistant Lexan® polycarbonate material for long outdoor life. It fits a 1.6" OD riser pipe and is available in seven colors. Reducing adapters are available for smaller O.D.'s. A clear terminal board has three terminal holes at 1" centers. Steel screws and nuts are made of stainless steel for corrosion resistance.