# What Causes The Northerly Turning Error In A Magnetic Compass?

The error results because the float on which the compass magnets are mounted is unbalanced to compensate for the vertical component of the earth’s magnetic field. Also called dip error.

## What causes compass error?

Magnetic dipMagnetic dipMagnetic dip, dip angle, or magnetic inclination is the angle made with the horizontal by the Earth's magnetic field lines. This angle varies at different points on the Earth's surface.https://en.wikipedia.org › wiki › Magnetic_dipMagnetic dip - Wikipedia creates the most substantial errors in a compass. As you get closer to the North or South Pole, magnetic flux lines point downwards towards the poles, and your compass magnets dip towards the low side of a turn.

## What are the errors of magnetic compass?

Magnetic dipMagnetic dipMagnetic dip, dip angle, or magnetic inclination is the angle made with the horizontal by the Earth's magnetic field lines. This angle varies at different points on the Earth's surface.https://en.wikipedia.org › wiki › Magnetic_dipMagnetic dip - Wikipedia creates the most substantial errors in a compass. As you get closer to the North or South Pole, magnetic flux lines point downwards towards the poles, and your compass magnets dip towards the low side of a turn. When magnetic dip is pronounced, it's difficult to get actual readings.

## What is the difference between compass error and deviation?

Compasses point to MAGNETIC NORTH, which varies from True North by an error called VARIATION. Compasses also are subject to their own errors; this is called DEVIATION. Magnetic VariationMagnetic VariationMagnetic declination, or magnetic variation, is the angle on the horizontal plane between magnetic north (the direction the north end of a magnetized compass needle points, corresponding to the direction of the Earth's magnetic field lines) and true north (the direction along a meridian towards the geographic North ...https://en.wikipedia.org › wiki › Magnetic_declinationMagnetic declination - Wikipedia is due to the differing positions of the Geographic North Pole and the Magnetic North Pole.

## What causes deviation in compass?

Deviation is caused by the effect of magnetic fields generated on board the vessel (such as the engine block), whereas variation is generated regionally by local effects (for example large areas of granite in the earth's surface).

[′käm·pəs ‚er·ər] (navigation) The angle by which a compass direction differs from the true geographical direction; assuming that there is no lubber line error, it is the algebraic sum of the declination, variation, and motion errors.