Proper use of a compass is a basic but essential skill in backcountry hiking, which often involves getting off marked trails The lensatic Read more. 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.

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In order to detect any errors we may have made, it is recommended that you plot at least one additional bearing to a different known location. In addition to degrees to measure directions in a circle, the military also uses 6, mils.

In us daytime, you’ll normally find something in the distance on your azimuth and walk t it, so you don’t have to keep staring at the compass. We will be plotting our bearing relative to Magnetic North, so there is no need to adjust for a different north reference. North is 0 degrees, so a declination of 10 degrees west would mean that you would point at degrees to point at true north.

Warning Always double check your compass readings. To do this we need to establish an accurate Magnetic North reference line on the map.

Plotting a bearing on a map using a round lensatic compass

compasd Hold it square and straight in front of you like you mean business. Using our compass we have sighted a bearing to our cabin of mils from Magnetic North. The mils are in black, and are the outer measurements on the leneatic. Looking at the photo below, let’s say you’re at the north end of Sheeler Lake, where the penciled X is. 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 on our map.


Place your thumb through the thumb loop, hold your index finger alongside the body of the lensatjc, and support it with the rest of your fingers. Extend your other index finger alongside the compass body and wrap the fingers of lensatix hand around the fingers of your first hand.

Note that we are using the magnetic dial in the compass. Turn the compass cover more or less perpendicular to the base. Put the thumb of your other hand on the compass, between the compass body and the lens.

You now have your target’s bearing. Hold the compass level by your thumb and index finger. Make an “L” shape with the index finger and thumb of your other hand. Things Needed Engineer lensatic compass.

Point of Interest In addition to degrees to measure directions in a circle, the military also uses 6, mils. Hold your compass in the two-hand hold, steady and level in front of you. How to Use the Engineer Fompass. Many wooden tables also have bolts, nails, screws, and other metal components. Using a protractor aligned with either True or Grid North depending compaas what the magnetic declination you are given is referenced tomake a mark on the map at the desired value.

We will be orienting our map with Magnetic North.

She has been studying health and fitness issues for more than 10 years. You can use this feature to set your compass in the dark. Open the compass completely and hold it level in front of you.

Lensaatic to the west are subtracted from leneatic degrees you are reading, and declinations to the east are added.

Some of these compasses have a notch at each end of the housing along this line. We know that we are somewhere along the shoreline of the lake. Then use a lensattic edge to draw and label the Magnetic North Reference line.


But a compass can never lose connection to the GPS satellites and will never run out of batteries. Our bearing was taken from an unknown location, towards a known location. One advantage is it’s probably more accurate when it comes to “shooting ,ensatic meaning the act of determining the specific compass direction to a spot on the earth.

Watch this video on YouTube There are different ways of holding the compass. Open the cover completely and pull back the rear sight.

The reason you want to set up the compass rather than just keep your eyes on the landmark is because your vision may become obscured. My page, fully illustrated book is yours for the asking.

How to Read an Engineer Compass | Sciencing

Don’t even consider using the hood or tailgate of a vehicle. The azimuth is the angular measurement of an object’s direction in relation to the viewer.

The declination diagram may not be drawn with an yow angle, or the angle may not represent the current declination. For more information on forward and back bearings, see our tutorial on forward and back bearings.

What Are the Parts of a Sextant? 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.

Start by putting your thumb through the thumb loop and putting your index finger alongside the compass, similar to the cheek method. Proceed to that target. Imagine that you want to hold it as if it were firmly mounted in that position.