A pin 56 projects upwardly from platform 14 to extend through {HEAD ~ an opening} in {TAIL ~ the bottom panel} of housing 16 
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A pin 56 projects upwardly from platform 14 to extend through { HEAD ~ an opening } in { TAIL ~ the bottom panel } of housing 16
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH