Garmin GPSMAP 78 Owner's Manual - Page 20
Elevation Plot, Go To Line/Pointer, Bearing, CoUrse, Compass, Select To Begin, Calibrate Altimeter - gpsmap 78sc gps
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Using the Main Pages ◦◦ Grid-sets grid north as the heading reference (0°). ◦◦ User-sets the magnetic variation value. • Go To Line/Pointer-allows you to select how the course is displayed. ◦◦ Bearing (Small/Large) indicates the direction to your destination. ◦◦ Course indicates your relationship to a course line leading to a destination. • Compass-allows you to switch from an electronic compass to a GPS compass when you are traveling at a higher rate of speed for a set period of time, or turns the compass off. • Select To Begin-starts the compass calibration (page 14). Elevation Plot note: The elevation plot page is available only with the GPSMAP 78S and GPSMAP 78Sc. Calibrating the Barometric Altimeter You can manually calibrate the barometric altimeter if you know the correct elevation or the correct pressure. 1. From the elevation plot, press menu. 2. Select Calibrate Altimeter. 3. Follow the on-screen instructions. 16 GPSMAP 78 Series Owner's Manual