(Note: if you have a compass with an adjustable declination the adjustment needs to be set to zero). Get my Land Navigation coursehere. 5. The lensatic compass must always be held level and firm when sighting on an object and reading an azimuth. But not to you, I trust. You should notice that the direction of travel arrow should be pointing at the top of the map, and the black orienteering lines should also be parallel to the north-south gridlines on the map. NB. True north is at the very top of the earth, while magnetic north is currently off the coast of Greenland. Well use the rear bearing of it to draw a line on the map from Saddle Mountain to our approximate direction. Knowing how to orientate a map is just one facet of the wider skill of knowing how to read a map. Youll want to turn it until that black arrow outline is lined up with the 4E hash mark. But heres where things get tricky: the angle of declination changes depending where you are on the earth. 5. Its not an issue. If youre in the Adirondacks, youll want to add 14 so your true bearing would be 194. At this point, your map is almost oriented. Uses a retractable lens to read the bearing while. Make sure the travel direction arrow is pointed in the direction you want to go. SEE IT. Finally, read the number on the rim of the compass. $7.20. Lets say you know youre southeast of Saddle Mountain and northeast of some smaller mountains. 2. 2. Home / Educational Resources / Math Resources / Compass: Definitions and Examples. You have your point location when you know precisely where you are in reference to your map. To orientate the map, rotate both the map and compass together until the red compass needle and the red orientating arrow match up. Your map is now aligned to magnetic north. SPECS dimensions:4.1" x 2.4" x 0.6" |10.4 x 6.2 Read More. It's important to hold your compass stable, squarely in front of you, and level. Magnetic North is 15 East. We guide you on how to orientate a map with or without your compass so that you can navigate your way through the backcountry. 2 a. Orient the map using the first technique. orient a map to the ground by map-terrain association, Sunday Firesides: Become an Evangelist . Well, that is, unless you're doing something silly like holding the compass backwards. Step 2: line the compass up with the map. From this diagram, we can see that our compass would point to magnetic north a little over 13 degrees to the right of "straight up" on the map (grid north). Find the magnetic declination on your map. As long as you can hold the compass level and steady, the exact grip doesn't matter. to orient the map to find your position. To use your lensatic compass to find the direction of your intended azimuth (which you probably got from your map, using your protractor): 1. They both use magnetization to help you find where you are and where youre going, but theres a catch. This makes it easier to relate what you see on the map with what you see on the ground. The big bang. You can see that the mountain is 24 degrees away from you. The reason contours are king is that they are fixed, at least in the timescales were talking about here. Dont worry that your red orientating arrow doesnt point exactly map north. Take a bearing on the mountain thats southwest from you. As you can see, the declination of the location Im in is 4E. You just need one more piece of information to figure out exactly where you are on the map. ? 3. At Advnture, we never head out into the backcountry without a map and compass. Sight an azimuth to any visible terrain feature that appears on the map. First, use your compass to get a bearing on a peak of Saddle Mountain. Imagine that you want to hold it as if it were firmly mounted in that position. The obvious drawback here is that such an approach is impossible in poor visibility. Designate your starting and ending points on the map. So in this episode, well go through the abilities youll need. Without getting over-complicated, a standard compass is different from a lensatic compass. Housing lines should be parallel to the vertical grid lines on the map. So, how are you going to acquire your point position? Step 1. Well, that is, unless you're doing something silly like holding the compass backwards. 3. Hey, it happens! Contours are king. Your article very useful for me and it helps me understand more about compass. Come on in and save lots of money! Next month, well wrap off our series with a final briefing on how to navigate using MGRS coordinates, exactly like the military. Now its time to use the lens. You look out into the distance and you see another mountain peak, but you dont know the name of it. Step 2. Timetoprepare.net is a participant in the Amazon Services LLC Associates Program and Other Programs, an affiliate advertising programs designed to provide a means for sites to earn advertising fees by advertising and linking to the Partners. The housing lines should be parallel with the maps vertical grid lines. Fill & Sign Online, Print, Email, Fax, or Download To begin, use your compass to locate a peak on Saddle Mountain. Well say the declination value is 10 degrees. Hold the compass at eye level and point it at the object. 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. 8; Page 11 G. LOCATING POSITION USING INTERSECTION 1. Magnetic north would be around 14 degrees to your right, or east. Start spinning the bezel slowly until the 'magnetized needle' is aligned with the 'orienting arrow.'. Bear in mind that an east declination value will be a positive number, and a west declination value will be a negative number. The angle between true north and magnetic north is declination. Look directly down on the top (smaller card) of compass to view general orientation cardinal points. Place map on flat surface (not metal) 2. On your map, though, you can see the two spots. Then, slide your compass around so that its edge passes through the landmark on the map, while the orienting arrow continues to point north. Save my name, email, and website in this browser for the next time I comment. Advnture is part of Future US Inc, an international media group and leading digital publisher. Survival Compass, Military Compass Hiking, Orienteering Lensatic Compass, Waterproof Navigation Compasses, Survival Emergency Luminous Sighting Compass. surface. Module 1 Lensatic Compass. Heres how it works. While some elements of the navigation process are similar to using a baseplate compass, there are also slight differencesincluding how you hold a lensatic compass. If we dont account for declination and use our map to acquire directions to our destination, well be wrong by 14 or more when we start walking. Note: This procedure places the fixed black index line of the compass parallel to north-south grid lines of the map. A: In order to orient and read a map, you have to have spatial awareness. Your map (and yourself) are now be orientated north. How Should I Set My GPS and Compass? Please refresh the page and try again. Hold the compass steady and level, and up to your face. Before we do that, lets take a closer look at declination. Great article! Turn the bezel on your compass so that north on the compass points to north on the map. A lightweight, well-engineered orienteering compass from the Finnish company that helped set the gold standard in navigation. Line it up with that. 9-4. Kieran James Cunningham is a climber, mountaineer, and author who divides his time between the Italian Alps, the US, and his native Scotland. Though GPS and smartphonesare reliable, its still vital to carry a compass, and know how to use it, as a backup or lifesaving form of navigation. Have you noticed the agonic line? Now repeat step 3 above and youre good to go. Performance Steps 1. Ymiko Compass Survival,Compass For Kids,Compass Hiking Durable Shockproof Waterproof Brass Camping Tools For Navigation Outdoor. The needle on your compass dial will always be pointing north, so when placing the compass on the map, the needle on the compass should match the map's north in order to orient yourself. Influences can be the factors of how the people life runs. Use a Compass to Plot Bearings on a Map. Hand placement: Insert your thumb through the thumb loop and the index finger along the compass. 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. Identify where you are on the map and place the compass edge over this location. Once you've got the bearing you can transfer it to the map. 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. Whenever the luminous magnetic arrow lines up with the luminous short line, you're following your intended azimuth. What happens if you dont adjust your compass for declination? We can find out easily enough, though. Plot a line on the map from Saddle Mountain at 130. Turn your compass on its side. Look through the sighting slot and find some target (a tree, boulder, whatever) that lines up with your sighting wire. Next, ensure youre happy with your judgment by matching other physical features in the landscape to the map, such as crags, glaciers, waterfalls, lakes and rivers. Turn your map so that north on the map corresponds to the needles orientation. As we can see, the area Im in has a declination of 4E. Turn your entire body as a unit until your predetermined azimuth falls under the fixed black index line. You then see where the line you drew intersects with the protractor's numbers, in this case 062 degrees. To find the tower's bearing with your lensatic compass: 1. Below, we offer a short, straight-talking guide to how its done. On your map, shoot the back bearing that you just took with your compass from the top of Saddle Mountain. So your true bearing would be 166. PART 1 Basic Land Navigation Module 6 Map Information WARNING This presentation is intended as a quick summary, and not a comprehensive resource. Flip your compass upside down. How to Use a Compass to Get Your Bearings. Weve compiled a detailed guide on how to adjust for magnetic declination, but at its most basic level it goes like this: Your map should state what the magnetic declination is in degrees for the region you are in. To use this method (a) Open the cover to a 90-degree angle to the base. How To Get Your Map and Compass To Face the Same Direction. Using a little screwdriver or the metal piece that came with your compass lanyard, turn the small screw. Now hold the compass on the map and rotate yourself and the map/compass together until the orienting arrow and the compass needle are aligned to magnetic north. It typically consists of a magnetized needle that is mounted on a pivot and placed inside a circular housing. Look at which way the red needle is pointing. Your email address will not be published. Battle tested - shock, water, sand proof, and. When you have a line position, you know that youre on some identifiable line on the map (trail, ridge line, etc. Were going to use the back bearing of that to plot a line from Saddle Mountain towards our general direction on the map. Open the cover completely and pull back the rear sight. But its important to understand the different types of navigational toolsincluding a lensatic compass. The United States military needs to know how to navigate on land when all digital systems fail. Lay your map out in front of you on a relatively flat and smooth (and dry!) ), Set Your Compass for Your Intended Azimuth. The instructions on this page might make orienting a map seem a highly technical thing. When this happens, its time to orientate using a compass. A lensatic compass features a small pop-out area for your thumb, and a lid on top of the main compass body. To avoid that problem, lets adjust our compass to take declination into account. A: To rotate a map in Beat Saber, you can hit the trigger button on your controller. Positioned the cover of the compass toward the top of the map. for Faith in Humanity, how to orient a map using a lensatic compass, orient a map using a lensatic compass powerpoint. Oriented the map. Adjust the compass bezel so that north on the compass corresponds to north on the map. 2. Declination was taken into account while adjusting the compass. Lay the map out flat in front of you. Make an "L" shape with the index finger and thumb of your other hand. Plot a line on the map using the back bearing from that mountain. At this point, your map is almost oriented. Lets pretend youre on a hike. A map, by definition, is a small-scale representation of the real world or a section thereof. Copyright 2013-2019 Collingwood Publications LLC, Some of the best land navigators around are orienteers--those who participate in the cross-country running/map reading sport of orienteering. In this guide, we will be covering the following: The first step to successful navigation with a map and compass in the backcountry is correctly orienting your map. This way you can see the object and the bezel at the same time. Look at the red needle to see which direction it is pointing. A good temperature of 65F to 78 should keep the humidity down and help preserve the structural integrity of the compass. Procedures. Youve got your dependable compass and a map of the region, but youre not sure where you are in respect to the map. One advantage is it's probably more accurate when it comes to "shooting azimuths," meaning the act of determining the specific compass direction to a spot on the earth. In this situation, you can use your compass to work out which direction magnetic north is and orientate from there. durability, and its hyper-accuracy in land. In this case, it 15 degrees positive (east). 5. Identify where you are on the map and place the compass edge over this location. Keep doing this until you get to where you want to go. 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. So, if youre at Muir Woods and your compass reads 180 degrees, subtract 14 degrees. 1. Another trick for declination when your compass cant adjust for it is to create your own declination arrow out of masking tape and tape it beneath your compass under the correct declination degree hash (This will only work if your compass has a clear base). Keep it in a case, or wrapped up in a thick cloth to prevent those damages. Place compass on top of map. Assume youve climbed to the top of Camels Hump in Vermont. 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. When you face true north, magnetic north is roughly 14 degrees to the left, or west, of you. A lensatic compass is just one of the many navigational tools we have built. Your lens piece will appear just above your thumb loop. Sometimes we may use GPS technology or navigational apps to find our way, but we will always have the option of a map and compass stashed safely in our hiking backpack. To do so accurately, however, we must first adjust our compass for magnetic declination so the reading taken from the compass arrow . Lastly, the reading lens also helps cover the compass and folds out; this is where the term lensatic comes from. Some of the components' terms are used in the explanations below. Position of the point. If your destination is further than what the side edging allows for, you can use an actual ruler to align with the side of your compass edge to help you get to your destination. 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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.
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