PRECISION COMPASS. * LENSATIC *. PROVEN • RUGGED ACCURATE. CAMMENGA. FAX ( ANILINE AVE. HOLLAND, MICHIGAN Learn how to use the lensatic compass used by the US Military. I get lots of questions via email from people wanting to know how to use a lensatic compass, and I think I’ve covered that pretty well in a series of two posts.

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At night, however, or in other periods of limited visibility fog, blizzard, etc keeping these two luminous bits lined up will be your only remedy. At the 24 year mark it will be another half of that, and so on. Resection with a lensatic compass is a compass whereby you can determine your own location from that of two known points in the distance. Copyright Leaf Group Ltd.

Next we’re going to talk about some of the uses of a lensatic compass, starting with the resection. Then, you place your protractor on the map with its center point at your current position, making sure the north-south lines on the protractor line up with the north-south lines on the map.

In the event that you’re under strict light discipline in a military setting, for example you can simply sup your hands around the compass and the head of the flashlight so that compaas light escapes.

With the thumb loop all the way down under the compass, put the thumb of ,anual hand all the way inside the loop, and place the index finger of that same hand along one side of the compass. You don’t want to hold it crooked, cockeyed, or off level.


Using a Lensatic Compass

All you do is take you compass and line it up from your current point to your desired destination and look at the compass reading. You want to find your position using the technique of partial resection, so you need to know that tower’s bearing with a high degree of accuracy. You need to write things down, draw lines, perform math, and make sure you lensaatic so with a reasonable degree of accuracy.

In your manuql, however, your declination is degrees West, meaning you’ll have to add degrees before you set your compass. Face the object that you want to measure using the engineer compass.

Lensatic Compass Guide

Steady the compass by allowing lensaric hand holding the compass to rest in the cupped palm of your other hand. 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. Use the illustration above to familiarize yourself with the components of a lensatic compass. The only problem is that this process takes time and tools.

It has replaced radium in recent decades after it was discovered that radium exposure is linked to an increased occurrence of bone cancer.

So, take your map and lay it down on a flat surface i. Check that the dial is floating freely.

So with that in compasss, I’ll start a series of short articles that each focus on a single tip for getting the most out of your compass.

From here it’s simple. Make an “L” shape with the index finger and thumb of your other hand. Do not move your head, but raise and lower your eyes when taking the azimuth using an engineer compass.


Tritium is considered safe for external use because it is a weak beta particle emitter – so weak in fact that the radiation it emits cannot penetrate human skin. Turn the compass in a horizontal manner until the azimuth is directly beneath the black manuak line on the face.

The key to the whole operation is having a map and being able to locate these features on that map. The normal method to transfer angles from your lensatic compass to your map and back is with a protractor and a pencil. Hold a compass level and steady to prevent the needle from touching the sides of the globe or the dial face.

Now, hold the compass level and squarely in front of you.

Lensatic Compass Guide

To use your lensatic compass to find the direction of your intended azimuth which you probably got from your map, using your protractor:. Pick up your map and head out!

Turn your entire body as a unit until your predetermined azimuth falls under the fixed black index line. Now, read the degree marking under the fixed lensaticc index line.

Hold it square and straight in front of you like you mean business. Learn Land Navigation Now. Enroll in my personalized step-by-step video-based online course.