What is a lensatic compass used for?
The lensatic compass is used to determine “azimuths” or “ compass bearings” (horizontal angles). It is also used to follow a course over the ground, orient or set a map, and determine position of objects in relation to a map.
What is 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.
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.
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 do you use a mirror compass?
To know where the reflected light is directed, use two fingers in a V-shape at arm’s length so that you see the target between your fingers. Then, keep the open compass mirror upright close to your eyes and turn the mirror until the reflected sunlight hits your fingers.
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 can impair the performance of a lensatic compass?
Check movement of the lens holder to ensure it is free moving. your objective, with the compass constantly in your hand. o Metal objects and electrical sources can affect the performance of a compass .
What is the best compass?
Here are the best compasses: Best overall: Suunto M-3 Leader compass. Best on a budget: Brunton TruArc 3 baseplate compass. Best mirrored: Suunto MC -2 mirrored compass. Best compact: Brunton Tag Along Zip compact compass. Best military-grade: Cammenga 3H tritium lensatic compass.
How many degrees does a military compass have?
The compass is divided into 360 individual ‘degrees’, with each cardinal point of the compass (North, East, South and West) being at 90 degrees to each other.
What is a tritium compass?
The tritium light sources provide readability in total darkness, with a life-span of 10 years. This compass features both a 0-6400 mils scale (20 mil resolution) and a 0-360 degree scale (5 degree resolution), with an accuracy of +/- 40 mils.