Garmin GI 275 Pilot's Manual page 61

Selected Altitude
Vertical Speed Indicator
Altimeter Setting
Changing the selected altitude:
1) From the 'ADI' Page, touch the Selected Altitude field.
2) Turn the Small Knob clockwise to increase or counterclockwise to decrease the Selected
Altitude bug in 100-foot increments.
Syncing the selected altitude to the current altitude:
Touch and hold the Selected Altitude field.
Or:
Touch the Selected Altitude field and push the Small Knob.
Altimeter Barometric Pressure Setting
WARNING: Do not use a QFE altimeter setting with this system. System functions
will not operate properly with a QFE altimeter setting. Use only a QNH altimeter setting
for height above mean sea level, or the standard pressure setting, as applicable.
The barometric pressure setting is displayed below the Altimeter in inches of mercury (in
Hg), hectopascals (hPa), or millibars (mb).
Changing the altimeter barometric pressure setting:
1) Touch the Barometric Pressure Datafield.
2) Turn the Small Knob clockwise to increase or counterclockwise to decrease the altimeter
setting.
Toggling the altimeter barometric pressure setting to/from STD BARO (29.92 in Hg /
1013 hPa):
Touch the Barometric Pressure Datafield. Push the Small Knob.
Or:
Touch and hold the Barometric Pressure Datafield.
190-02246-01 Rev. L
Altimeter and Selected Altitude
Garmin GI 275 Pilot's Guide
Flight Instruments
Indicated Altitude
Selected Altitude Bug
39