A tracer control system 1 wherein said range is circular and said data stored in said memory for determining the limits of the selected tracing are {HEAD ~ coordinate values} along {TAIL ~ said machine axes} of the center of the circular range and a radius therefrom 
A tracer control system 1 wherein said range is circular and said data stored in said memory for determining the limits of the selected tracing are { HEAD ~ coordinate values } along { TAIL ~ said machine axes } of the center of the circular range and a radius therefrom
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH