A rod support member is coupled to the base of the rod in {HEAD ~ a manner} to permit the rod to pivot about {TAIL ~ its base} 
A rod support member is coupled to the base of the rod in { HEAD ~ a manner } to permit the rod to pivot about { TAIL ~ its base }
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 OTH TAIL TAIL TAIL TAIL TAIL TAIL