Adjustable ring structure is provided in accordance with the teachings of the present invention wherein {HEAD ~ a ring shank} is hinged to define {TAIL ~ first and second arcuate elements} having an aperture therebetween 
is hinged to define
Adjustable ring structure is provided in accordance with the teachings of the present invention wherein { HEAD ~ a ring shank } is hinged to define { TAIL ~ first and second arcuate elements } having an aperture therebetween
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH