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To set Heading: from the Units of Measure menu, press ↓ to
HEAD-
ING
|ENT. Use ↑ ↓ to select the desired unit and press ENT.
To set Altitude: from the Units of Measure menu, press ↓ → to
ALTI-
TUDE AND
DEPTH|ENT. Press ↑ ↓ to change the unit, then press ENT.
To set Depth: from the Units of Measure menu, press ↓ to
ALTITUDE AND
DEPTH|ENT. Press ↑ ↓ to change the unit, then press ENT.