Reference numeral 16 is intended herein to refer to {TAIL ~ the interconnected cutting rules} which define the perimeter of {HEAD ~ metal portion} 12 
Reference numeral 16 is intended herein to refer to { TAIL ~ the interconnected cutting rules } which define the perimeter of { HEAD ~ metal portion } 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH