The pins may be engaged into the notches of {TAIL ~ the base} for securing the plate at {HEAD ~ the vertical position} 
The pins may be engaged into the notches of { TAIL ~ the base } for securing the plate at { HEAD ~ the vertical position }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD