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