Further, locking means are provided for the guide member and the guide means that allow to lock {TAIL ~ the support member} and, hence, {HEAD ~ the arm rest padding} in place at certain height positions 
Further , locking means are provided for the guide member and the guide means that allow to lock { TAIL ~ the support member } and , hence , { HEAD ~ the arm rest padding } in place at certain height positions
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 OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH