Standard vs Transposition Cross-arm Pin

By Lou Hall; posted July 20, 2008

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The wooden cross-arm pin on the left is a transposition pin for the two-piece transposition insulator (CD 190/191, CD 192/193, CD 192.1/193.1) and the one piece (CD 196, CD 196.1, CD 196.5) The wooden pin on the right is a standard pin.