Two Pole: I & DC Porcelain
3 1/4" X 1 1/4" (83mm X 33mm)
(top embossed) RADIO LIGNTNING ANT / I & DC / GND ARRESTER |
3 1/4" X 11/16" (83mm X 17mm)
Picture courtesy Mike Green |
These two pole versions were used to connect a single wire to ground. This is green glazed dry process porcelain.