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Now, rotate the map and compass baseplatetogetheruntil the compass needle is boxed in the red orienting arrow (or direction-of-travel lines) on the compass. It is the bread and butter of navigation and a good habit to get into every time you set off in any given direction. Thanks so much for sharing! The term lensatic comes from the fact that there is a lens on the rear side of the compass that aids in the orienteering process. Making sure you don't move to change directions, turn the glass compass housing until the short luminous line is directly lined up with the luminous magnetic arrow. You see that the mountain is 24 in relation to you. Turn your declination-adjusted compass dial so due North is at the index pointer. There was a problem. Move the lens holder: Slightly push forward the lens holder. 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. What wildlife can you see at Yellowstone National Park? Its one of the most versatile navigation tools we have available today. We only recommend products we genuinely like, and purchases made through our links support our mission and the free content we publish here on AoM. Last update on 2023-03-04 / Affiliate links / Images from Amazon Product Advertising API. Find the magnetic declination on your map. Position of the point. Close is good enough in horsehoes, but I'm hoping exact is the standard for artillery fire. 4. Ensure that the compass bezel is set to 0 degrees i.e. Navigate to your map. . Spatial awareness refers to having knowledge about where everything in the environment is located relative as well as understanding how objects relate with each other spatially. Make a mark with your pencil at the notch on the end furthest from the sighting wire. Save my name, email, and website in this browser for the next time I comment. If not, recalibrate before continuing. Gently pull the lid down until the sighting line is visible through the lens. When you have a line position, you know that youre on some identifiable line on the map (trail, ridge line, etc. For this, they use a lensatic compass, among other navigation equipment and techniques. So its declination would be 14W. EMERGENCY PREPAREDNESS & More: A Manual On Food Storage and Survival: 2nd Edition Revised and Updated. Turn the compass dial so that the bearing intersects the index line (2). Also known as setting the map, orientating helps to relate your position and the landscape around you to the map, therefore making onward navigation more straightforward. This was developed. Return from Lensatic Compass to How to Use a Compass. How can you get your point position then? You now have your target's bearing. The courses of streams change, field boundaries move, new hedgerows are built, walls are plundered for buildings, glaciers melt, roads and bridges are washed away by floods, houses are knocked down and rebuilt somewhere else. The first step is to always take a compass bearing. Youre in the right place! USING A COMPASS Magnetic azimuths are determined with the use of magnetic instruments, such as lensatic and M2 compasses. To use the terrain to orient a map, you must be familiar with symbols used on the map. 1. The keys to successfully navigating the wilderness are being able to determine your position, know where youre going and understand how terrain affects your movement abilities. When orienting a map, our aim is to position it so that the north-south grid lines on the map (eastings) are aligned north-south. Once you are physically at your starting location, its time to put your compass to good use. 1 color. 3. Place compass on top of map. Step 1. Step 1: Find the North Star. Line your orienteering compass's base plate up with the map's north-south lines. Orienting the Map with anOrienteering Compass. He is currently the President of the London Mountaineering Club, training to become a Winter Mountain Leader, looking to finally finish bagging all the Wainwright fells of the Lake District and hoping to scale more Alpine 4000ers when circumstances allow. Check the index line to find out the bearing you just have taken. 2. A lightweight, well-engineered orienteering compass from the Finnish company that helped set the gold standard in navigation. Heres our step-by-step guide to the most straightforward. In this case, it 15 degrees positive (east). It's important to hold your compass stable, squarely in front of you, and level. Plot a line on the map using the back bearing from that mountain. It is easy to learn and it can be done with just a map and compass. In my. Once you reach your landmark, align yourself again to make sure youre on the right path. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); What is a Lensatic Compass and How to Use Them? So your true bearing would be 166. If you want to learn Land Navigation in detail, either buy a book; or get someone, who has the knowledge and skills, to teach you in person. Your email address will not be published. We'll start from the beginning, and go through everything you need to know to find your way over the terrain. Remember, human features are the last port of call and, whats king again? It will be clearer why we need to compensate for declination in the first place. 2. What happens if you dont compensate for declination with your compass? slide 1 to 3 of 3. 1. If you have already adjusted your compass for magnetic declination, your map is now oriented and youre good to go. Step One: Take a Compass Bearing on the Ground. ENROLL NOW. Want a free ebook on Land Navigation? Line up the meridian lines (the parallel lines inside the bezel) with a north/south grid line on the map. Everything on your map will be reversed if youre looking south and holding the map right side up. Take a bearing to a visible landmark using your compass. Most people have never heard of them, but soon enough, youre going to be a master at using them. 1. Fortunately, orienting your map is simple. But not to you, I trust. Line up your map with what you see around you. It will make it easier to understand why we adjust for declination in the first place. Hey, it happens! Next, without changing the orientation of you map, move your compass so that the point you are plotting to/from is under the sighting wire, and the compass dial reading matches your bearing. Keep in mind that maps are drawn with north at the top. 9-4. Designate your starting and ending points on the map. Orienting, or aligning, the map is really easy with just 3 steps: Lay your map out on a relatively flat, smooth surface. Used the G-M angle formed by the . What's that? Advnture is part of Future US Inc, an international media group and leading digital publisher. A Cumbrian born and bred, his native English Lake District has a special place in his heart, though he is at least equally happy in North Wales, the Scottish Highlands or the European Alps. Module 11 Plotting Position Coordinates exact positioning, used to communicate to others with a A: In order to orient and read a map, you have to have spatial awareness. Without getting over-complicated, a standard compass is different from a lensatic compass. Now, hold the compass level and squarely in front of you. Turn your map so that north on the map, points in the same direction as the needle. 4. So, if youre at Muir Woods and your compass reads 180 degrees, subtract 14 degrees. Note that we will be moving and adjusting the compass on the map. This way you can see the object and the bezel at the same time. To get among the sources, you can discover the fascinating point to acquire. This is because it is prepped to point instead to magnetic north once its lined up with your compass needle. You need to know where youre going before toying with the compass. This involves trying to orient a map using only topographical features and your own eyesight. Use a Compass to Plot Bearings on a Map. Hed just line his map up with the features of the lake we were currently on to find our portage to the next lake. 2. Orienting the Map with aLensatic Compass. If the local declination is negative, add the declination amount . Lets say you know youre southeast of Saddle Mountain and northeast of some smaller mountains. So in this episode, well go through the abilities youll need. The angle between true north and magnetic north is declination. When orienting a map, our aim is to position it so that the north-south grid lines on the map (eastings) are aligned north-south. On your map, shoot the back bearing that you just took with your compass from the top of Saddle Mountain. Making sure you don't move to change directions, turn the glass compass housing until the short luminous line is directly lined up with the luminous magnetic arrow. Place the three remaining fingers below as if you are holding a gun. Draw a line towards the roadway youre on using the side of your compass. When moisture seeps into the lens case of your lensatic compass, it causes major problems. Adjust the compass bezel so that north on the compass corresponds to north on the map. With the map in a horizontal position, take the straightedge on the left side of the compass and place it alongside the north-south grid line with the cover of the compass pointing toward the top . Make sure the direction of travel arrow is pointing to the spot that youre trying to get to. Identify your approximate location on your map. You see that its 230 in relation to your location. This is because technology is fallible, batteries run out, cold kills gadgets and theres always the possibility of dropping a device down a steep slope or into a rushing river. Then, slide your compass around so that its edge passes through the landmark on the map, while the orienting arrow continues to point north. Lets return to Muir Woods as an example. 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. Turn the little screw using a small screwdriver or the little metal piece that comes with your compass lanyard. Steady the compass by allowing the hand holding the compass to rest in the cupped palm of your other hand. What if you dont have access to a compass that can compensate for declination? Now hold your compass horizontally and point the 'direction-of-travel-arrow' towards the landmark. PARTS OF THE LENSATIC COMPASS Compass, Lensatic, US Army, closeup: 2 (From another source) 1. Look through the sighting slot and find some target (a tree, boulder, whatever) that lines up with your sighting wire. Set your compass dial to 000 degrees. Youve got your trusty compass and a map of the area, but you dont know exactly where you are in relation to the map. To figure out precisely where you are on the map, you simply need one more piece of information. 2. The orient a map to the ground by map-terrain association is one of the most basic skills that you will need in order to survive. You want to know how to use a lensatic compass? Imagine that you want to hold it as if it were firmly mounted in that position. Hold compass up to eye level and view larger side card for "direction-of-travel" compass. But its important to understand the different types of navigational toolsincluding a lensatic compass. Compass adjusted for declination. Place the compass flat on the map with the travel arrow pointed in the general direction of north and one of the base plate's long edges linking your location and your destination; you may need a straight-edge to make the connection, depending on the map's scale and the distance to be covered. What are 2 ways to orient a map? First, use your compass to get a bearing on a peak of Saddle Mountain. The number one destroyer of compasses and any enclosed items like these is moisture. Basically, in areas west of the agonic line, the compass needle will point somewhere to the east of true north; in areas east of the agonic line, the compass needle will point somewhere west of true north. Casio's latest G-Shock watch could be a serious Garmin rival. You can see that the mountain is 24 degrees away from you. Lets move to the opposite coast of the U.S. Lets say youre in the Adirondacks of New York. What if youre not on a trail, but you just know the general area youre in? Using the Centerhold Technique. FM 3-25.26: Map Reading and Land Navigation. The cover is used to protect the compass and alsoincorporates thesighting wirewhich helps you determine direction. Align the map so that the top of the map is parallel with the direction north based on the compass. This can be done either by (1) rotating the map the requisite number of degrees east or west or (2) holding the baseplate firmly, rotate the compass housing to the correct number of degrees west or east to account for the declination. UK readers, youre in luck. What is the preferred method of using a lensatic compass when reading magnetic azimuths. Open it up using the cloud-based editor and begin editing. True north and magnetic north are not the same, as stated in Part I. Start with contour features, such as what the ground is doing in front of you and around you, what happens to the terrain in the middle distance and then whats going on in terms of distant mountain peaks, ridges, hills and escarpments. Its a bit tricky, but once you get the hang of it, youre solid. 3. Say your azimuth was 170 degrees. Boom. The Lensatic compass also has a large number of drawbacks, including the use of a large case that can make this a cumbersome and heavy option. Position the eyepiece at a 45-degree angle to the . A compass needle aligns with the magnetic fields in the Earth, which is what it uses to help you find true north. The big idea normally is to have your map more or less line up with the terrain so you can make sense of where things are around you. Rotate the compass until the north on the bezel points to the top of the map and the compass housing orienting lines are parallel to the maps vertical grid lines, using your position as a pivot. That would be 130. Lay your map out in front of you on a relatively flat and smooth (and dry!) A Beginners Guide. You can figure this out with a little compass work. (Note: The magnetic compass needle should be ignored.) Use the illustration above to familiarize yourself with the components of a lensatic compass. Nothing is permanent and contours are more permanent than pretty much everything else on a map. You want to go cross country directly to Devil's Wash Basin, a deep and beautiful lake you've heard a lot about. The first step of orienting with our map and compass is to make sure north on the map lines up with north in our terrain. A map so lined up is easier to interpret and follow than a map spread out haphazardly. Using your protractor or other straight edge, you draw a line from your current position in the direction of where you want to go. Where the line intersects with the highway is where you are on the map. Ymiko Compass Survival,Compass For Kids,Compass Hiking Durable Shockproof Waterproof Brass Camping Tools For Navigation Outdoor.