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