How do you compensate for declination with a compass?

How do you compensate for declination with a compass?

Your compass needle will point to true north….To compensate for declination:

1. Align the north arrow (the N) of the azimuth ring along a north/south line on the map.
2. Check the diagram at the bottom of the map that shows whether magnetic north is to the left or right of true north.

How do you adjust declination bearings?

Turn the compass over. Insert the metal key (provided with your compass) into the adjustment screw. Turn the key until the declination indicator is the correct number of degrees east or west of 0° (15.6 degrees West in this example).

What is a declination scale on a compass?

The angle between true north and magnetic north is called declination and is either east or west of magnetic north depending on where you are on Earth. The fixed declination correction is an additional scale under the compass needle.

How do you calibrate a lensatic compass?

Keep the compass in place and then rotate the map until the compass needle is pointing north in sequence with the magnetic north line. The compass and map will now be calibrated and aligned with a true north direction.

How do you use a lensatic compass?

Pick an object, rotate your entire body (not just the compass), and align the object with the sight wire. Look through the magnifying glass and find the green line that we matched to the sight wire. Locate the number on the inner dial. You will also see the directions North, South, East, and West.

What does declination positive east mean?

By convention, declination is positive when magnetic north is east of true north, and negative when it is to the west. Isogonic lines are lines on the Earth’s surface along which the declination has the same constant value, and lines along which the declination is zero are called agonic lines.

What is declination in orienteering?

Knowing the difference (measured in angular degrees) between true north and the horizontal trace of the magnetic field for your location allows you to correct your compass for the magnetic field in your area. This angular difference is called your declination.

How do you find the back azimuth in Mils?

Back Azimuth. The back azimuth of 180 degrees may be stated as 0 degrees or 360 degrees. For mils, if the azimuth is less than 3200 mils, add 3200 mils, if the azimuth is more than 3200 mils, subtract 3200 mils.