The pressure ensures {HEAD ~ adequate contact} between the covering and {TAIL ~ a counter shaft assembly} which communicates magnetically with internal electronic circuitry 
The pressure ensures { HEAD ~ adequate contact } between the covering and { TAIL ~ a counter shaft assembly } which communicates magnetically with internal electronic circuitry
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH