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