{HEAD ~ Second configuration signal device assembly} 20 differs from {TAIL ~ the first configuration} only by hook 60 being formed on the front end of rod 58 instead of a straight front end rod 48 
differs from
{ HEAD ~ Second configuration signal device assembly } 20 differs from { TAIL ~ the first configuration } only by hook 60 being formed on the front end of rod 58 instead of a straight front end rod 48
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH