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