If your compass features an adjustable declination, start by finding your declination value, the deviation between magnetic ...

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Read Next: How to Make a Compass How to Use the Compass. A compass is more effective with the aid of a map. Together, they can pinpoint your exact location and the direction you need to head.

This compass includes a sighting hole and notch so you can get accurate bearings, as well as a clinometer and a declination adjustment tool. The TruArc needle tilts up to 20° for balanced use ...

Your compass may be about to point 'true north' for first time in 360 years. ... Experts say the line of zero declination is moving westward at a rate of around 12 miles (20km) per year.

THE Meteorologische Zeitschrift for April contains an interesting article by Prof. G. Hellmann on the knowledge of the magnetic declination before the time of Christopher Columbus. Some years ago ...

But that’s not where a compass aims when it points north. ... The difference shows that the magnetic declination at this location in 1768 was 7.6 ± 0.3 degrees W.

The angle a compass needle makes between true north and magnetic north is called declination. As the magnetic field changes all the time, so does declination at any given location.

I BEG to call your attention to the enclosed reprint from the May Pilot Chart of curves of magnetic declination as recorded at the United States Naval Observatory at Washington. This reprint ...

A magnetic compass, including the compasses on most smart phones, does not point to the North Pole, or even to the North Magnetic Pole. Instead, it points away from True North by an angle known as ...