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.
|Published (Last):||11 January 2009|
|PDF File Size:||20.9 Mb|
|ePub File Size:||15.5 Mb|
|Price:||Free* [*Free Regsitration Required]|
Point of Interest An “azimuth” is pretty much the same as a “bearing. That is, take the azimuth you recorded and subtract degrees from it, or mills if using a military lensatic compass.
What Are the Parts of a Sextant? Don’t even consider using the hood or tailgate of a vehicle. One disadvantage is, unlike the orienteering compass, it’s not easy to make it double as a protractor, meaning you’ll have to carry a protractor with you. Well, that is, unless you’re doing something silly like holding the compass backwards. Determining a Bearing, or “Shooting an Azimuth”. Keep doing this until you get to where you want to go.
How to Read an Engineer Compass | Sciencing
How to Calculate Azimuth. Hold the compass with your thumb fully in the thumb ring, and your index finger wrapped around and gripping the compasx part of the underneath of the compass’s base. Raise the compass up to your eye. Make a mark with your pencil at the notch on the end furthest from the sighting wire. But not to you, I trust. They give the basics of how they work, how to shoot an azimuth, how to get a bearing, and so on. Rough direction to the cabin. The older the map, the more likely the declination shown in the diagram is no longer correct.
Do not move your head, but raise and lower your eyes when taking the azimuth using an engineer compass. So, take your map and lay it down on a flat surface i.
Use a pensatic to get a general sense of direction for North, South, East, and West. Those lines will intersect at some point if you’re done your resection properly. The lensatic compass is used by the U.
Next we’re going to talk about some of the uses of a lensatic compass, starting with the resection. Looking at the photo below, let’s say you’re at the north end of Sheeler Lake, where the penciled Ccompass is.
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. Instead you will use an imaginary line that runs down the center of the compass.
Yow to that target. How usse Use the Engineer Compass. A truck, your radio, or even hoq barrel of your hunting air gun can push the needle away from north. Now, read the degree marking under the fixed black index line.
Note the red number on the dial, which is the degrees under the black index line on the compass face. As long as you can hold the compass level and steady, the exact grip doesn’t matter. Turn your entire body as a unit until your predetermined azimuth falls under the fixed black index line. How to Use a Bushnell Voyager Telescope. Return from Lensatic Compass to Home.
Point of Interest In addition to degrees to measure lendatic in a circle, the military also uses 6, mils. Note that we are using the magnetic dial in the compass. One of the difficulties inherent to using a compass is that magnetic north is not the same as true north.
Lensatic Compass Guide
The more back azimuths you can draw, the more accurate your location will be. That line should intersect reasonable close to where the other lines crossed. To do this we need to establish an accurate Magnetic North reference line on the map. In the daytime, you’ll normally find something in the distance on your azimuth and walk to it, so you don’t have to keep staring at the compass.
How to Use a Lensatic Military Compass – Navigate Safely in the Wild
Using a compass we can sight a bearing to our cabin across the lake. Extend your other index finger alongside the compass body and wrap the fingers of that hand around the fingers of your first hand. Watch this video on YouTube Another useful method is to uxe your map to north by using your compass.
This means that at around the 12 year mark, the tritium in your lensatic compass will have radiated about half the energy that it has to offer. Declinations to the west are subtracted from the degrees you are reading, and declinations to hos east are added. Whenever the luminous magnetic arrow lines up with the luminous short line, you’re following your intended azimuth.
The location we sighted the bearing to the cabin is where the back bearing intersects the lake shore. Pick up your map and head out! The mils are in black, and are the outer measurements on the ring. Now, hold the compass level and squarely in front of you.
Our bearing was taken from an unknown location, towards a known location. Hold it square and straight in front of you like you mean business.