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How to Use a Compass. Understanding Declination. FAQs. Final Thoughts. Parts of a Compass. ... The north-seeking arrow should stay pointing to magnetic north as the compass moves.

If magnetic north lies directly between you and true north, then you’ll have a declination of zero. But in most areas, you’ll have to add or subtract to what your compass reads as north.

One of the tricky parts of navigating with a compass is that magnetic north isn't the same as true north. The angle between the two--known as the declination--varies depending on your location.

In Maine, magnetic declination currently varies between 14-1/2 and 17 degrees west of true north, depending on your location. Spread your map out on a table and let’s do a quick exercise.

Now when the compass needle is inside the orienting needle, the compass bearing that you read off your compass will be in relation to true north instead of magnetic north. If you have a fixed-ring ...

Magnetic compasses use the earth’s magnetic field. ... After adjusting your compass for declination, start by orienting your map to true north, as in the instructions above. 1.

Dan Joling of Anchorage was set to photograph the full moon rising over the Port of Anchorage on Jan. 6, 2023. His research told him the moon would pop over the horizon at a certain number of ...

If I were to find that compass in my closet today, I would need to change the declination by twisting a disc within its face. True north in Fairbanks is now just 16 degrees west of magnetic north.

Many migratory birds use Earth’s magnetic field as a compass, but some can also use information from that field to determine more or less where they are on a mental map. Eurasian reed warblers ...