Make sure the travel direction arrow is pointed in the direction you want to go. Magnetic North is 15 East. How to Use a Compass to Get Your Bearings. What if youre not on a route and just have a broad idea of where you are? ","acceptedAnswer":{"@type":"Answer","text":"A: You can use the arrow keys, or you can hold down shift and move in any direction to rotate a map around its axis. Make sure the direction of travel arrow is pointing to the spot that youre trying to get to. Hold the compass steady and level, and up to your face. If you are interested in trying your hand at navigation with a lensatic compass, check out our Brunton 9077 Compass, and follow along with this video: If you are interested in trying your hand at navigation with a lensatic compass, check out our. Step 3 Use one of two techniques to orientate the map. The bezel clicks as it moves--three degrees for every click. 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Title: USING THE MILITARY LENSATIC COMPASS 1 USING THE MILITARY LENSATIC COMPASS PART 2 Intermediate Land Navigation Module 14 Travel Distance Estimation 2 . Determine the correct magnetic azimuth to the designated point within 3 degrees using the compass-to-cheek method, or within 10 degrees using the center-hold method. Get your own customized topographical maps, built according to your specifications. Lensatic compasses are used by the United States military for a reason. 3 . Say your azimuth was 170 degrees. As mentioned in Part I, true north and magnetic north arent the same. However, we should be able to figure it out rather quickly. A compass is a device used for navigation and orientation. Open the compass: Let the cover and the base form a 90-degree angle. There is some technical difference between the two, but for all practical civilian purposes, the words are interchangeable. PARTS OF THE LENSATIC COMPASS Compass, Lensatic, US Army, closeup: 2 (From another source) 1. When you do know exactly where you are in relation to your map, you have your point position.. Adjust for magnetic declination. My 159-page, fully illustrated book is yours for the asking. orient a map to the ground by map-terrain association, Sunday Firesides: Become an Evangelist . Home / Educational Resources / Math Resources / Compass: Definitions and Examples. Where the second line intersects with the first is where youre at on the map, more or less. Its declination would be written as 14E. 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. Map Reading and Land Navigation: FM 3-25.26. There are 2 ways to do this - using landmarks or using a compass. Find the magnetic declination on your map. Your lens piece will appear just above your thumb loop. Now $7.56. Place your compass base plate on your map so the edge of the compass is aligned with the north-south meridian lines. Next, without changing the orientation of you map, move your compass so that its edge is touching the point you are plotting to/from and the compass dial reading matches your bearing. Best Overall. Adjust the compass bezel so that north on the compass corresponds to north on the map. Ethan Allan, the peak you observed, is cut through by the plotted line. Finally, you can always triple check with human features, such as walls or towns that youd expect to be able to see in the valley. The fact that they glow in the dark (especially, if they're the tritium kind which will glow for years without having to be exposed to light) means you can use your compass without a light for night navigation. Method #2. Most compasses are marked with the four cardinal. When your compass cant adjust for declination, you may make your own declination arrow out of masking tape and attach it below your compass under the right declination degree hash (This will only work if your compass has a clear base). On the other hand, wrap the fingers around the three fingers below the compass. To use your lensatic compass to find the direction of your intended azimuth (which you probably got from your map, using your protractor): 1. Put the compass anywhere on top of the map. Determining a Bearing, or "Shooting an Azimuth", Using Your Compass Sights to "Shoot an Azimuth". Used the G-M angle formed by the . Youve orientated the map. Turn the little screw using a small screwdriver or the little metal piece that comes with your compass lanyard. To do so accurately, however, we must first adjust our compass for magnetic declination so the reading taken from the compass arrow . Module 11 Plotting Position Coordinates exact positioning, used to communicate to others with a When you purchase through links on our site, we may earn an affiliate commission. Oriented the map. c. There are two methods of holding the lensatic compass and sighting. So your true bearing would be 166. All you have to do is shoot a bearing towards the unidentified peak. 1. 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 . 8; Page 11 G. LOCATING POSITION USING INTERSECTION 1. 1. north. It is easy to learn and it can be done with just a map and compass. Now hold your compass horizontally and point the 'direction-of-travel-arrow' towards the landmark. Look at which way the red needle is pointing. For bearings of one to 179 degrees, rotate the bezel counter-clockwise. Youre on that line, so you know where youre standing. I guess the military needs the extra accuracy now and then say, for example, to precisely place artillery fire. Survival Compass, Military Compass Hiking, Orienteering Lensatic Compass, Waterproof Navigation Compasses, Survival Emergency Luminous Sighting Compass. You can always orient your map with a working compass. Hold the compass at eye level and point it at the object. Here's an example from an older map of the Grand Canyon. Lets say you know youre southeast of Saddle Mountain and northeast of some smaller mountains. If you don't, visit the page just hyperlinked. Its one of the most versatile navigation tools we have available today. You can also plot a known compass bearing on the mapthe reverse process. Now that were putting compass to map, we need to adjust for it so that we can accurately orient and navigate. Youve got your trusty compass and a map of the area, but you dont know exactly where you are in relation to the map. If your local declination is east of the agonic line, youll need to add the declination to your compass bearing; if its west of the agonic line, youll need to remove the declination from your compass bearing. We know were someplace south of Saddle Mountain on HW 115. Turn your entire body as a unit until your predetermined azimuth falls under the fixed black index line. There is no declination, and you do not need to adjust your compass. Using the rotating bezel, turn it until the direction of travel arrow lines up with the north arrow. Take a bearing to a visible landmark using your compass. 3. Have you noticed the agonic line? Turn the compass dial so that the bearing intersects the index line (2). 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. To use the terrain to orient a map, you must be familiar with symbols used on the map. At that point, leave it out in a spot where it can really dry overnight until you know the internal components are no longer moist. Step 1: Find the North Star. It is the bread and butter of navigation and a good habit to get into every time you set off in any given direction. So in this installment, well go over the skills you need to do just that. 5. A power point class to Orient a Map Using a Lensatic Compass or $0.99 - Purchase Checkout Added to cart or $4.99 - Monthly Subscription Checkout Added to cart Billed once per month until cancelled or $14.99 - Annual Subscription Checkout Added to cart Billed once per year until cancelled or $9.99 - Protected: VIP Subscription Checkout Added to cart Billed once per year until cancelled . Take your compass and turn the compass housing (bezel) until the red orientating arrow is in line with the direction of travel arrow. Lensatic compasses are made up of three parts: cover, base, and reading lens. Next month, well wrap off our series with a final briefing on how to navigate using MGRS coordinates, exactly like the military. Close is good enough in horsehoes, but I'm hoping exact is the standard for artillery fire. What if you dont have a compass that allows you to adjust for declination? With your bezel ring set, stand at your starting point and . The back bearing is 50. Heres our step-by-step guide to the most straightforward. 2. PART 1 Basic Land Navigation Module 6 Map Information WARNING This presentation is intended as a quick summary, and not a comprehensive resource. If you have already adjusted your compass for magnetic declination, your map is now oriented and youre good to go. Some of the best land navigators around are orienteers--those who participate in the cross-country running/map reading sport of orienteering. Corrected the orientations of the map when the G-M angle exceeded 3 degrees (50 mils) using one of the following: a. How to Pack a Backpack Are You Doing it Right? Lay the map out flat in front of you. ), you just dont know exactly where. True north is at the very top of the earth, while magnetic north is currently off the coast of Greenland.
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