A plate has {HEAD ~ an opening} formed between two legs for receiving the block and has two pins engaged into the extensions for rotating the plate relative to the base between a vertical position and {TAIL ~ a folded position} 
A plate has { HEAD ~ an opening } formed between two legs for receiving the block and has two pins engaged into the extensions for rotating the plate relative to the base between a vertical position and { TAIL ~ a folded position }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL