{TAIL ~ The gimbal mechanism} provides a tight fit between the door and the housing when {HEAD ~ the door} is in the closed position 
{ TAIL ~ The gimbal mechanism } provides a tight fit between the door and the housing when { HEAD ~ the door } is in the closed position
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH