The stopper 50 is positioned closest to {HEAD ~ the middle section} 48 of {TAIL ~ the arm} 14, the stopper plate 52 is adjacent to the stopper 50 and the stopper pin 54 is adjacent to the stopper plate 52 
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The stopper 50 is positioned closest to { HEAD ~ the middle section } 48 of { TAIL ~ the arm } 14 , the stopper plate 52 is adjacent to the stopper 50 and the stopper pin 54 is adjacent to the stopper plate 52
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL 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 OTH OTH OTH