Specifically, the end 31 of the prop 21 is pivotally connected to {HEAD ~ the link} 32 which, in turn, is pivotally connected to {TAIL ~ the bracket} 33 
is pivotally connected to
Specifically , the end 31 of the prop 21 is pivotally connected to { HEAD ~ the link } 32 which , in turn , is pivotally connected to { TAIL ~ the bracket } 33
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH