Clamps 22 are mounted in {HEAD ~ slots} 14 by {TAIL ~ screws} 23 having heads 24 
Clamps 22 are mounted in { HEAD ~ slots } 14 by { TAIL ~ screws } 23 having heads 24
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH