FIG 15 is {TAIL ~ a perspective view} of {HEAD ~ a series} of spring elements in a stacked arrangement 
FIG 15 is { TAIL ~ a perspective view } of { HEAD ~ a series } of spring elements in a stacked arrangement
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH