The counter shaft is attached at one end to a magnet wheel which communicates with a printed circuit board to ensure {HEAD ~ accurate advancement} of {TAIL ~ the cover material} 
of
The counter shaft is attached at one end to a magnet wheel which communicates with a printed circuit board to ensure { HEAD ~ accurate advancement } of { TAIL ~ the cover material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL