mckrob
Gold Member
- Joined
- Jan 15, 2007
- Messages
- 2,020
Here is where to get the most current declination values:
In the U.S.:
http://www.ngdc.noaa.gov/seg/geomag/geomag.shtml (go to the calculator link)
Or in Canada:
http://gsc.nrcan.gc.ca/geomag/field/magdec_e.php (go to the calculator link)
The Garmin models I have used will give you the calculated current magnetic declination for your current location. With the unit turned on, and sats locked on (the position is current), enter the UNITS Setup, choose HEADING, options are AUTO MAG VAR, TRUE, GRID, and USER MAG VAR, pick the first option (AUTO) and your calculated magnetic delination for your location will be displayed in degrees east or west. You can then set your compass with this number, but don't forget to change it back to TRUE or GRID, whichever is most applicable for your navigation.