FIG 4 more completely illustrates {HEAD ~ the nature} and {TAIL ~ relationship} of convex shape 9 with its matte finish 3 to angular shoulder 8, wall 7 and open end 6 
FIG 4 more completely illustrates { HEAD ~ the nature } and { TAIL ~ relationship } of convex shape 9 with its matte finish 3 to angular shoulder 8 , wall 7 and open end 6
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH