{HEAD ~ the contact assembly} including a contact arm, first and second spacers, and {TAIL ~ a pivot post} 
{ HEAD ~ the contact assembly } including a contact arm , first and second spacers , and { TAIL ~ a pivot post }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL