A stopper 50, stopper plate 52 and {HEAD ~ stopper pin} 54 are secured to {TAIL ~ the arm} 14 adjacent the second end 46 
A stopper 50 , stopper plate 52 and { HEAD ~ stopper pin } 54 are secured to { TAIL ~ the arm } 14 adjacent the second end 46
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH