“Do the GPS 64st require calibration? And if so, how often? Is it free service?”

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• Calibration of the compass and altimiter can be performed on the 64st, though may not be necessary. It is free to do, and instructions on doing so can be found in the owner's manual: http://www8.garmin.com/manuals/webhelp/gpsmap64/EN-US/ ^DK

  Answered by GarminProductExpert 9 years ago

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