The range of movement thus being represented by the spacing between the top of the collar 68 and {HEAD ~ the bottom} of {TAIL ~ the eyebolt} 54 
of
The range of movement thus being represented by the spacing between the top of the collar 68 and { HEAD ~ the bottom } of { TAIL ~ the eyebolt } 54
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH