Learn how to use the lensatic compass used by the US Military. Plotting a bearing on a map using a round lensatic compass. Sighting the bearing. To determine our location we are going to combine two pieces of information. Use a compass to explore, navigate, map terrain and travel around the Engineers, the engineer compass is also called a lensatic compass.

Author: Meztibei Kagaktilar
Country: Uzbekistan
Language: English (Spanish)
Genre: Business
Published (Last): 12 February 2006
Pages: 403
PDF File Size: 1.89 Mb
ePub File Size: 4.73 Mb
ISBN: 863-6-68833-589-5
Downloads: 77445
Price: Free* [*Free Regsitration Required]
Uploader: Yozshuzahn

Now, read the degree marking under the fixed black index line. They give the basics of how they work, how to shoot an azimuth, how to get a bearing, and so on. Then, you place your protractor on the map with its tp point at your current position, making sure the north-south lines on the protractor line up with the north-south lines on the map.

Return from Lensatic Compass to Home. Point of Interest An “azimuth” is pretty much the same as a “bearing. Those lines will intersect at some point if you’re done your conpass properly. Most people are aware that lensatic compasses are fitted with small amounts of tritium around the dial.

With solid land-navigation skills, you’ll be more confident and “at home” in the wilderness.

How to Read an Engineer Compass | Sciencing

Sometimes even a metal belt buckle can interfere with a compass, which can result in an incorrect reading. Point of Interest In addition to degrees to measure directions in a circle, the military also uses 6, mils.


The declination diagram may not be drawn with an accurate angle, or the angle may not represent the current declination.

Have ckmpass fear, the science here is sound a proven. Steady the compass by allowing the hand holding the compass to rest in the cupped palm of your other hand.

Avoid magnetic fields from magnets, electrical appliances, iron or automobile engines. Then use a straight edge to draw and label the Magnetic North Reference line. Resection with a lensatic compass is a process whereby you can determine your own location from that of two known points in the distance. You now have your target’s bearing. Note that we are using the magnetic dial in the compass.

Lensatic Compass Guide

From your known location on the map, you take your protractor, line it up to true north, find the angle to your next point, adjust for declination, and then shoot that angle with your compass. Like any skillit is good to practice lensqtic with a lensatic compass before your life depends on it.

Be sure you understand magnetic declination. L ook through the sighting slot and find some target a tree, boulder, whatever that lines up with your sighting wire.

Plotting a bearing on a map using a round lensatic compass

Andrew SkillsSurvival. Determining a Bearing, or “Shooting an Azimuth”. A round lensatic compass has no straight edge to align.

How to Use the Engineer Compass. Then, from where you are, shoot an azimuth to the feature as accurately as possible, and calculate the back azimuth from that reading. If the tritium in your compass has become dim such that you can’t read the compass at night, you can “charge” it up with any flashlight. With the thumb loop all the way down under the compass, put the thumb of one hand all the way inside the loop, and place the index finger of that same hand along one side of the compass.


Set up correctly, when the bezel mark and needle are aligned, the sighting wire points at the chosen landmark. She has been studying health and fitness issues for more than 10 years. This one will deal with night and low light navigation, a topic that could span several lengthy articles on its own. We’ll start from the beginning, and go through everything you need to know to find your way over the terrain.

Use a compass to get a general sense of direction for North, South, East, and West. In your case, however, your declination is degrees West, meaning you’ll have to add degrees before you set your compass.

It has its advantages and disadvantages over the orienteering compass.