King Cache Traditional Cache

Footnotes on Compasses:
When using a compass in the field, it is very important to be careful when taking the measurement and when converting between field and map bearings. An error of five degrees in reading accuracy will result in a position error of about 150 yards after one mile of travel.
East Declination: The declination is East (10°) thus magnetic north is greater than true north the map bearing is greater than the field bearing. You need to make the two worlds equivalent by adding or subtracting the declination.

• Map Bearing to Magnetic Bearing: If you are taking a bearing from one point on your map to another point on the map with respect to true north, then you are working with the map bearing. Now you want to figure out where your position is in the magnetic bearing. In order to transfer this information back to your magnetic bearing you need to subtract the declination from your map bearing compass bearing to create the proper magnetic bearing bearing. Map bearing - Declination = Magnetic Bearing.
• Magnetic Bearing to Map Bearing: If you use your compass to take a bearing from your current position to a point on the landscape, then you are working with the magnetic bearing. Now you want to figure out where your position is on the map. In order to transfer this information back to your map you need to add the declination from your magnetic bearing compass bearing to create the proper map bearing. Magnetic bearing + Declination = Map Bearing.