Tool 11 has bubble level 12 mounted in {HEAD ~ one end} of {TAIL ~ the tool} 11 and a thumb screw 8 mounted in the opposite end 
of
Tool 11 has bubble level 12 mounted in { HEAD ~ one end } of { TAIL ~ the tool } 11 and a thumb screw 8 mounted in the opposite end
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH