MERIT INDUSTRIES Megatouch XL, Technical Service Reference Manual

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2. Go back to calibrate mode, but this time touch exactly on the center of the calibration
dots, to more accurately calibrate the screen (see Figures 2a and 2b). You are now
back in TEST SCREEN mode. Touch the approximate location where the first dot
appeared. If the crosshair is not centered on your finger, note the direction and
approximate distance which it is off center. Repeat this procedure at the approximate
location of the second calibration dot (see Figures 2c and 2d). (If the crosshair is
centered on your finger, the screen is calibrated accurately.)
Figure 2a Figure 2b
Figure 2d Figure 2c