{HEAD ~ The optical inspection} of each component instantaneously occurs by recording {TAIL ~ the eight optical images}, on two frames, one frame being recorded by each of the cameras 
instantaneously occurs by recording
{ HEAD ~ The optical inspection } of each component instantaneously occurs by recording { TAIL ~ the eight optical images } , on two frames , one frame being recorded by each of the cameras
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH