# What is my magnetic declination?

Magnetic declination, or declination, is the difference between the true north reading from the map and the magnetic north reading from a compass. When a compass is used in combination with a map, a correction must be made to allow for declination.

## What is my magnetic declination?

Magnetic declination, or declination, is the difference between the true north reading from the map and the magnetic north reading from a compass. When a compass is used in combination with a map, a correction must be made to allow for declination.

What is the current magnetic variation?

The difference between true and magnetic north varies by location and over time. In most populated parts of the world, it currently ranges from 30 degrees west (south-eastern tip of Africa) to 26 degrees east (southern tip of New Zealand). However, most locations on Earth have a considerably smaller declination.

### What is the magnetic inclination at the equator?

The angle the magnetic field lines make with surface of the Earth is the magnetic inclination. The magnetic inclination is 90 degrees at the magnetic poles and zero degrees at the magnetic equator.

What is a magnetic inclination angle?

Magnetic inclination is the angle that the geomagnetic field is tilted with respect to the surface of the earth. Magnetic inclination varies from 90 (perpendicular to the surface) at the magnetic poles to 0 (parallel to the surface) at the magnetic equator.

## How do you calculate true north from magnetic north?

Thus to convert from a magnetic bearing to a true bearing you would add 17°. The angle measured from the target to Grid North is also larger than the angle measured from the target to Magnetic North. The difference is the 17° angle from True North to Magnetic North less the 1° 33′ angle from True North to Grid North.

Should I use magnetic or true north?

As it turns, Magnetic North is much more important than True North. The Magnetic North pole is also known as a “dip pole” and, along with Magnetic South, is where the Earth’s magnetic field is at its weakest.

### What is the degree difference between true north and magnetic north?

Magnetic north and geographic north align when the so-called “angle of declination”, the difference between the two norths at a particular location, is 0°. Declination is the angle in the horizontal plane between magnetic north and geographic north. It changes with time and geographic location.

What is the difference between inclination and declination?

Magnetic declination is the angle between magnetic north (the direction the north end of a compass needle points) and true north. The declination is positive when the magnetic north is east of true north. Magnetic inclination is the angle made by a compass needle when the compass is held in a vertical orientation.

## How is magnetic declination calculated?

C {\\displaystyle C} is Compass bearing

• M {\\displaystyle M} is Magnetic bearing
• T {\\displaystyle T} is True bearing
• V {\\displaystyle V} is magnetic Variation
• D {\\displaystyle D} is compass Deviation
• V < 0,D < 0 {\\displaystyle V<0,D<0} for westerly Variation and Deviation
• V > 0,D > 0 {\\displaystyle V>0,D>0} for easterly Variation and Deviation
• How to use magnetic declination in a sentence?

True North – Geographically where north is.

• Magnetic North – Where the compass points.
• Grid or Mapmaker’s North – How grid lines are oriented to correct for spherical distortion.
• ### What is meant by magnetic declination?

Magnetic declination is the difference between true North and the direction of a magnetic compass at a particular point on Earth.

How to adjust for magnetic declination or variation?

– Put your knowledge to the test after understanding how magnetic declination works. – Always set out with the most recent map with an updated declination value. – Learn a few tricks from someone who knows land navigation.