15 inch long extension rod that can be inserted between a standard reference electrode (RE-5, RE-5C, RE-7, RE-3A, Sponge Bottle etc.) and a “Side Terminal Electrode Extension” (see Item #16101 or Item #16105) in order to further extend the distance between a reference electrode and a (side terminal) test lead connection. For example, combining Item #16101 with Item #16200 would result in a total rod length of 45 inches.
