In the Garmin 430 there is a field for Barometer setting. How does the Garmin get this information? larry
In the Garmin 430 there is a field for Barometer setting. How does the Garmin get this information?
You scroll to the field, and twist the little knob and the big knob in the right sequence until the numbers match what is set in your altimeter 
It’s used only for the TAS/density alt/wind calculations.