{HEAD ~ a second housing} pivotally connected to {TAIL ~ said first housing} for movement about a first axis between an erected operative position and a folded inoperative position 
pivotally connected to
{ HEAD ~ a second housing } pivotally connected to { TAIL ~ said first housing } for movement about a first axis between an erected operative position and a folded inoperative position
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH