From the elevation plot, select menu.

Change Plot Type

Sets the type of data shown on the elevation plot. .

Adjust Zoom Ranges

Adjusts the zoom ranges shown on the altimeter page.

Change Data Fields

Allows you to customize the altimeter data fields.

Reset

Resets the altimeter data, including waypoint, track, and trip data.

Calibrate Altimeter

See (Calibrating the Barometric Altimeter (GPSMAP 64)).

Restore Defaults

Restores the altimeter to factory default settings.