The servo amplifier 188 also receives a signal on line 192 from a change detector 194 which will initially be at the 3 volt level, {HEAD ~ i.e. the signal level} representing {TAIL ~ the desired workpiece dimension} 
representing
The servo amplifier 188 also receives a signal on line 192 from a change detector 194 which will initially be at the 3 volt level , { HEAD ~ i.e. the signal level } representing { TAIL ~ the desired workpiece dimension }
OTH OTH OTH OTH OTH 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 HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL