A plurality of linkages translate {TAIL ~ movement} of the stylus along {HEAD ~ its guide} to the cutter along its guide 
A plurality of linkages translate { TAIL ~ movement } of the stylus along { HEAD ~ its guide } to the cutter along its guide
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH