A system includes a speed control module, {HEAD ~ a repeatable component measuring module}, and {TAIL ~ a repeatable component correcting module} 
A system includes a speed control module , { HEAD ~ a repeatable component measuring module } , and { TAIL ~ a repeatable component correcting module }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL