The invention further relates to {HEAD ~ an apparatus} for calibrating a sensor which may be used for measuring {TAIL ~ color} of a color display in calibration of the display 
The invention further relates to { HEAD ~ an apparatus } for calibrating a sensor which may be used for measuring { TAIL ~ color } of a color display in calibration of the display
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH