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.

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Putting the two in a opaque bag or enclosure is effective as well.

That’s the heading that you need to move uee to reach your desired end or way point. Watch this video on YouTube Another useful method is to orient your map to north by using your compass. The fact that they glow in the dark especially, if they’re the tritium kind which will glow for years without having to be exposed to light means you can use your compass without a light for night navigation.

Lensatic Compass Guide

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. She has been studying health and fitness issues for more than 10 years. Use the engineer compass to measure the azimuth to take a bearing or direction.

Keep your head still and then read the azimuth through the lens bracket. So, take your map and lay it down on a flat surface i. Tilt the lens bracket approximately 30 degrees from the perpendicular position of the compass.


That way you skip the math, the protractor, the lines, and get it all done quicker.

How to Read an Engineer Compass | Sciencing

As long as you can hold the compass level and steady, the exact grip doesn’t matter. 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 no light escapes. Return from Lensatic Compass to Home.

Use a file to make a permanent notch at each end. But a compass can never lose connection to the GPS satellites and will never run out of batteries. This is known as a back bearing. Holding the compass up to your face, angle the rear sight so that you can read the compass dial clearly through the lens while peering through the sighting slot and lining your distant target the water tower, in this case up with the sighting wire.

A lensatic compass, also called hiw military compass, is a more commpass and useful version of a magnetic compass.

How to Use a Bushnell Voyager Telescope. Your compass is now set. We will be plotting our bearing relative to Magnetic North, so there is no need to adjust for a different north reference. Then, from where you are, shoot an go to the feature as accurately as possible, and calculate the back azimuth from that reading.

Next we’re going to talk about some of the uses of a lensatic compass, starting with the resection. You now have your target’s bearing. Open the cover completely and pull back the rear sight. Some of these compasses have a notch at each end of the housing along this line. Unless you are stranded on a deserted islandknowing how to use a compass just may save your life!


Avoid magnetic fields from magnets, electrical appliances, iron or automobile engines. Hold the compass with your thumb fully in the thumb ring, and your index finger wrapped around and gripping the circular part of the underneath of the compass’s base.

Plotting a bearing on a map using a round lensatic compass

Using a protractor aligned with either True or Grid North depending on what the magnetic declination you are given is referenced tomake a mark on the map at the desired value.

This, in a nutshell, is how to perform a resection with a lensatic compass. This means that at around the 12 year mark, the tritium in your lensatic compass will have radiated about half compss energy that it has to offer.

Learn Land Navigation Now. Do not move your head, but raise and lower your eyes when taking the azimuth using an engineer compass.

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