The overall setup of FIG 4 provides {HEAD ~ multiple axes} of {TAIL ~ rotation} for the means 60 to hold the clamp in the chosen position 
of
The overall setup of FIG 4 provides { HEAD ~ multiple axes } of { TAIL ~ rotation } for the means 60 to hold the clamp in the chosen position
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH