How to use a military compass

How do you use a US military compass?

Place the fully opened lensatic compass on map with the scale edge alongside the Magnetic North line of the declination diagram. Adjust the map (with compass on it) so that the compass cover points to Magnetic North (North arrow of compass is pointing directly to the Index Line). The map is now oriented to the terrain.

How do you hold a military compass?

Place the thumb of the other hand between the lens (rear sight) and the bezel ring; extend the index finger along the remaining side of the compass , and the remaining fingers around the fingers of the other hand. Pull your elbows firmly into your sides; this will place the compass between your chin and your belt.

What is a military compass?

A lensatic compass is often referred to as a military compass , and is typically used by the U.S. Military . Lensatic compasses are made up of three parts: cover, base, and reading lens. The cover is used to protect the compass and also incorporates the sighting wire—which helps you determine direction.

How do you read an engineering compass?

Hold the compass level by your thumb and index finger. Raise the compass up to your eye. Line up the sighting groove in the bracket with the wire and an object in the distance. Keep your head still and then read the azimuth through the lens bracket.

What compass does the US military use?

The compass is identical to military issued models. The company who makes the compass, Cammenga , was started in 1992 to primarily manufacture the model 3H compass for the US military.

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What compass do Army Rangers use?

the Garmin eTrex 20x. The Garmin is a great navigation tool and anyone backpacking in the wilderness wouldn’t get lost using this device. The Silva Ranger is a great compass , probably the best compass on the market today.

What is the most common military method of expressing direction?


What can impair a lensatic compass?

o Metal objects and electrical sources can affect the performance of a compass .

How would you hold a lensatic compass?

Position the eyepiece at a 45-degree angle to the base. (b) Place your thumb through the thumb loop, form a steady base with your third and fourth fingers, and extend your index finger along the side of the compass base. (c) Place the hand holding the compass into the palm of the other hand.

How do you read a prismatic compass?

It always points towards the north. Therefore, all the angles measured with prismatic compass are with respect to north (magnetic meridian). “the horizontal angle made by a survey line with reference to magnetic meridian in clockwise direction is called the bearing of a line.

How does a directional compass work?

A compass points north because all magnets have two poles , a north pole and a south pole, and the north pole of one magnet is attracted to the south pole of another magnet. (You may have seen this demonstrated by a pair of simple bar magnets or refrigerator magnets pushed end to end.)

What is a baseplate compass?

BASEPLATE COMPASSES The baseplate compass is a practical, simple to use, liquid filled compass that features a baseplate which is marked with a red arrow pointing along the long axis, and a rotating compass housing marked in degrees. Baseplate compasses are ideal for taking quick bearings and map use.

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How do you sight in a compass?

Hold the compass level with the mirror at about a 45° angle. Use the sighting notch to align the compass with the target. Looking into the mirror, turn the dial to align the orienting arrow with the north needle. Turn the dial to align the orienting arrow with the north arrow.

How do you use a lost compass?

Hold the compass as previously described and rotate your body until you are facing west. Then take a look at your surroundings and pinpoint an object that is in the direction that you are going, then walk in that direction towards your destination.