Thanks people, issue resolved
did the following...
Created the following file...
/etc/X11/xorg.conf.d/99-calibration.conf
and pasted the following set of snippets that threw up after calibration.
----------------------------------
Section "InputClass"
Identifier "calibration"
MatchProduct "eGalax Inc. Touch"
Option "Calibration" "1947 137 139 1755"
Option "SwapAxes" "1"
EndSection
Section "InputClass"
Identifier "calibration"
MatchProduct "eGalax Inc. Touch"
Option "Calibration" "139 1949 1750 134"
EndSection
----------------------------------
and Wallah !!! my calibration got set permanently
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