Under processor control, {HEAD ~ the color measurement} may be made at a predetermined height and {TAIL ~ angle} 
Under processor control , { HEAD ~ the color measurement } may be made at a predetermined height and { TAIL ~ angle }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL