a retracted shafts position placing {HEAD ~ the guide device} into {TAIL ~ the floating state} in which position the opposing shafts are retracted to another maximum and leave the connecting interface free, allowing lateral displacement 
a retracted shafts position placing { HEAD ~ the guide device } into { TAIL ~ the floating state } in which position the opposing shafts are retracted to another maximum and leave the connecting interface free , allowing lateral displacement
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH