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What is magnetic variation?

The difference in direction between the magnetic North pole (magnetic North) and the direction to the Earth's rotational North pole (true North) is referred to as variation. Variation changes depending where you are on the Earth and can be obtained... Read More

What is magnetic deviation?

The Earth's magnetic field is distorted or deviates from normal in the presents of ferrous material. These distortions or deviations can be compensated for within magnetic compasses by calibrating them to account for this magnetic deviation. Read More

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