The present invention is directed to applications where {HEAD ~ products} such as {TAIL ~ printed circuit boards} are moved from station to station during a manufacturing process 
such as
The present invention is directed to applications where { HEAD ~ products } such as { TAIL ~ printed circuit boards } are moved from station to station during a manufacturing process
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH