SUUNTO Elementum Terra - Manual (Page 21)

NOTE: The device informs 'FAIL' if the calibration does not succeed. If the
calibration fails, re-calibrate the compass.
TIP: Buckle the device strap, place the support cushion inside the strap and
put it in the package so that the device is level. Perform the calibration on a table,
which does not contain metal.
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