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