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