{HEAD ~ Apparatus} for checking {TAIL ~ diametral dimensions} of a cylindrical part in orbital motion in a numerical control grinding machine 
for checking
{ HEAD ~ Apparatus } for checking { TAIL ~ diametral dimensions } of a cylindrical part in orbital motion in a numerical control grinding machine
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH