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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Plotting a bearing on a map using a round lensatic compass
Place your thumb through the thumb loop, hold your index finger alongside the body of the lenswtic, and support it with the rest of your fingers. Want a free ebook on Land Navigation? Use a file to make a permanent notch at each end. Tilt the lens bracket approximately 30 degrees from the perpendicular position of the compass. Generally once you have drawn your own Magnetic North line, you will not need to do this again on this map sheet for many years.
But a compass can never lose connection to the GPS satellites and will never run out of batteries.
Using a compass we usf sight a bearing to our cabin across the lake. The older the map, the more likely the declination shown in the diagram is no longer correct. 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.
When we plot the bearing on our map, our location will be where the line between our location and the cabin crosses the shoreline of the lake. We can abbreviate to either mils Mag. The lensatic compass is used by the U. Turn the compass in a horizontal manner until the azimuth is directly beneath the black index line on the face. You don’t want to hold it crooked, cockeyed, or off level.
Use the illustration above to familiarize yourself with the components of a lensatic compass. The north reference is an integral cpmpass of any bearing. Two parts of this line include the sighting wire, which you can align with things that are visible on the map, and the center of the rotating compass card.
Open the compass completely and hold it level in front of you. The location we sighted the bearing to the cabin is where the back bearing intersects the lake shore. Though such a simple device tl been around for about a thousand years, compasses have not lost their utility.
Well, that is, unless you’re doing something silly like holding the compass backwards. It’s important to hold your compass stable, squarely in front of you, and level. Let’s say you see a water tower off in the distance. I keep one in my truck and one in my bug-out bag because they can save your life.
How to Use a Lensatic Military Compass – Navigate Safely in the Wild
How to Use the Engineer Compass. But not to you, I trust. Open the engineer compass until the cover is 90 degrees to the compass case. Place your thumb in the loop on the side of the compass.
Unless you are stranded on a deserted islandknowing how to use a compass just may save your life! A compass is a floating magnetic needle that always points toward a magnetic north pole. As long as you can hold the compass level and steady, the exact grip doesn’t matter. Avoid magnetic fields from magnets, electrical appliances, iron or automobile engines.
Hold a compass level and steady to prevent the needle from touching the sides of the globe or the dial face.
Extend your other index finger alongside the compass body and wrap the fingers of that hand around the fingers of your first hand. To use your lensatic compass to find the direction of your intended azimuth which you probably got from your map, using your protractor:.
In our example will will extend the line as a back bearing.