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