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