measuring {HEAD ~ the transfer data} at {TAIL ~ the predetermined transfer position} again, for a guided vehicle which needs measurement of the machine difference data again, to newly determine machine difference data to update the transfer data at each of the transfer positions 
measuring { HEAD ~ the transfer data } at { TAIL ~ the predetermined transfer position } again , for a guided vehicle which needs measurement of the machine difference data again , to newly determine machine difference data to update the transfer data at each of the transfer positions
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH