The intermediate member contains {TAIL ~ a plurality} of segmented circular concentrically spaced slots corresponding with {HEAD ~ the grooves} of the base and cover member planar faces 
The intermediate member contains { TAIL ~ a plurality } of segmented circular concentrically spaced slots corresponding with { HEAD ~ the grooves } of the base and cover member planar faces
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH