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