The range of movement of the rod 52 is determined by {HEAD ~ the setting} of a collar 68 toward {TAIL ~ the upper end} of the rod and below the eyeblot 54 
toward
The range of movement of the rod 52 is determined by { HEAD ~ the setting } of a collar 68 toward { TAIL ~ the upper end } of the rod and below the eyeblot 54
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH