Nextar ME09EH User Manual page 25

General Setup
Align Screen
Tap in the Setup menu to align the screen, as shown below.
Tap the center of the cross with your finger. When the cross moves to
another position, tap and hold the center of the new target. Repeat
each time to complete the calibration process. When tapping the
screen on the final step, the new settings will be stored and you are
returned to the Display menu.
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