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