As seen in FIG 4, central section 16 is at {HEAD ~ an oblique angle} to {TAIL ~ the parallel extended end sections} 12, 14 
to
As seen in FIG 4 , central section 16 is at { HEAD ~ an oblique angle } to { TAIL ~ the parallel extended end sections } 12 , 14
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH