gtranquilla
RadioActive
This software tool may be of some interest for MR pilots needing to adjust their GPS-digital compass for True north relative to magnetic north for your flying location(s).
The angle of declination also changes over time so a periodic check before flight is worth considering.
http://www.ngdc.noaa.gov/geomag-web/#declination
View attachment 14672
The angle of declination also changes over time so a periodic check before flight is worth considering.
http://www.ngdc.noaa.gov/geomag-web/#declination
View attachment 14672