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