071-COM-1011 Orient a Map Using a Lensatic Compass(1).pdf When you have a line position, you know that youre on some identifiable line on the map (trail, ridge line, etc. But it isnt just magnets there are other culprits at play, here. If youre in the Adirondacks, youll want to add 14 so your true bearing would be 194. Move the lens holder: Slightly push forward the lens holder. SEE IT. To get among the sources, you can discover the fascinating point to acquire. 2. The bezel clicks as it moves--three degrees for every click. 3.Rotate the map and compass until the directions of the declination diagram formed by the black index line and the compass needle match the direction shown in the . Module 11 Plotting Position Coordinates exact positioning, used to communicate to others with a Make sure your map is aligned with magnetic north (see above). number of degrees in a circle (360: north is 0 or 360, east is 90, south is 180, and. Set your compass dial to 000 degrees. Travel to that landmark. Reserve! At Advnture, we never head out into the backcountry without a map and compass.
How to Use a Lensatic Compass: Guide for Hikers Note that we will be moving and adjusting the compass on the map. Map Reading and Land Navigation: FM 3-25.26. Hey, it happens! Huzzah! No worries. Thats your bearing from point A to point B. The instructions on this page might make orienting a map seem a highly technical thing. The narration and imagery may seem old-timey in this era of high-def computer graphics . But heres where things get tricky: the angle of declination changes depending where you are on the earth. 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. To do so accurately, however, we must first adjust our compass for magnetic declination so the reading taken from the compass arrow is pointing our map towardtruenorth as opposed tomagneticnorth. USING A COMPASS Magnetic azimuths are determined with the use of magnetic instruments, such as lensatic and M2 compasses. What happens if you dont adjust your compass for declination? Just follow these lensatic compass instructions: Open the compass: Let the cover and the base form a 90-degree angle. 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. The easiest way to orientate a map is to relate the features in front of you to the features on the map. Ethan Allan, the peak you observed, is cut through by the plotted line. For this example, were going to go to the Wichita Mountains Wildlife Refuge in Oklahoma. Half the activity of their sport is keeping their map oriented so they can navigate faster and with more accuracy. My magnetic declination is 4E, so Ill be moving the black arrow outline towards the red hash marks that are going towards E DECL.. So, if youre at Muir Woods and your compass reads 180 degrees, subtract 14 degrees. Turn your declination-adjusted compass dial so due North is at the index pointer. Compass adjusted for declination. Were ready to start orienting ourselves now that our compass has been corrected for local declination. Holding any compass in a slack and half-a**ed (that's an old military term. When it comes to how to orientate a map, there are two main ways to do it. Execute your docs in minutes using our simple step-by-step instructions: Get the How To Use A Lensatic Compass you need. (1) Compass-to-cheek method (figure C-21). 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. Identify your approximate location on your map. Fill & Sign Online, Print, Email, Fax, or Download If the local declination is negative, add the declination amount . durability, and its hyper-accuracy in land. So in this episode, well go through the abilities youll need. Return from Lensatic Compass to How to Use a Compass. The red end of the needle must be pointing to the top of the map. Instead of using your compasss arrow, youll align your needle with the tape arrow. On the map, you are where the line connects with the highway. 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. (2) Keep the compass aligned as directed above while . The number one destroyer of compasses and any enclosed items like these is moisture. Your action from here depends on the value and direction of your declinationeast or west. You don't want to hold it crooked, cockeyed, or off level. If everything is matching up, youre onto a winner. Suunto M-3 Compass. 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. Let's have a look at the sources that constantly give favorable points. At night, however, or in other periods of limited visibility (fog, blizzard, etc) keeping these two luminous bits lined up will be your only remedy. Place your compass base plate on your map so the edge of the compass is aligned with the north-south meridian lines. Take that bearing and plot it on the map using the technique explained above. You see that its 230 in relation to your location. Lets say youre planning a short hike from one point to another. In this case, it would be 204 (24+180). Lets say youve hiked the peak of Camels Hump in Vermont.
References required related fm 3 2526 land navigation Shoot the reverse bearing you got with your compass from the top of Saddle Mountain on your map. Sight: Now peek through the rear sight slot, aligning the sighting wire or the front sight to the desired direction or object. 4. No declination exists and you dont have to adjust your compass. Flip up the small magnifying glass. Welcome back to the Land Navigation Manual for the Art of Manliness. Finally, read the number on the rim of the compass. On your map, though, you can see the two spots. What if youre not on a trail, but you just know the general area youre in? and compass together is to orient the map towards north simply align the map merid, figure 10b while keeping compass edge on landmark pivot compass until magnetized needle is centered within orienting arrow plot bearing on map by drawing line from landmark using the edge of the compass figure 10c 1 how a compass works your compass is a . 2. Lensatic compasses aremade upof three parts: cover, base, and reading lens. Enroll in my personalized step-by-step video-based online course. Whenever the luminous magnetic arrow lines up with the luminous short line, you're following your intended azimuth. Its 310 degrees in reference to you, as you can see. Save my name, email, and website in this browser for the next time I comment.
We may then use our compass to begin going in the direction we need to go in order to reach our destination. . Method #1. We just dont know where exactly. The base is the compass dial, bezel, and the thumb loopthe thumb loop is used for stability to garner a more accurate reading. 3. Youll see that it shows two arrows when you turn your headset or controllers around to show the new orientation of a map."}}]}. to orient the map to find your position. From the compass, to GPS, to now even your mobile devicetheres no shortage of navigational tools.
Set Up Your Compass Faster & More Accurately With A Map Protractor (1) 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 of the map. When youre on this line and are facing true north, magnetic north lines up perfectly, too.
Map & Compass: Adjust for declination & orient the map - Andrew Skurka Looking at the map is an easy way of finding which direction north or east are relative to your current position. slide 1 to 3 of 3. Orient a map using a lensatic compass pointsnorth, east, south, and westbut some are marked additionally with the. To find the tower's bearing with your lensatic compass: 1. True north and magnetic north are not the same, as stated in Part I.
How to Use a Lensatic Compass - Carnegie Museum of Natural History Boom. Use the lens to look through the sighting line to find another landmark, and repeat until you reach your destination. PARTS OF THE LENSATIC COMPASS Compass, Lensatic, US Army, closeup: 2 (From another source) 1. PART 1 Basic Land Navigation USING THE MILITARY LENSATIC COMPASS Module 6 Map Information. 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. And thats it! This involves trying to orient a map using only topographical features and your own eyesight. You can also use this website to get up to date declinations. 2. Lets return to Muir Woods as an example. Use a Compass to Plot Bearings on a Map. You cant see the end point in your terrain, so you cant shoot a bearing on it. Because my magnetic declination is 4E, Ill move the black arrow outline to the red hash marks next to E DECL.. If not, recalibrate before continuing. This way you can see the object and the bezel at the same time. They could be your saving grace during a SHTF situation. Well say the declination value is 10 degrees. You look out into the distance and you see another mountain peak, but you dont know the name of it. Theyre not traditionally used for camping trips or simple navigation, but if youre serious about prepping, this is a must-have in your EDC bag and bug out bag. At this point, your map is almost oriented. Nothing is permanent and contours are more permanent than pretty much everything else on a map. That would be 130. 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 . Now, read the degree marking under the fixed black index line. ","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. Lets say you know youre southeast of Saddle Mountain and northeast of some smaller mountains. 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. Hold the compass at eye level and point it at the object. Great article! Thankfully, its notwhether orienting your map with a compass or without, this is a skill that can be learned in minutes and which can be done in a matter of seconds out in the field. Center the compass on the map, with one of the baseplates long edges running between the two places of interest. Sight an azimuth to any visible terrain feature that appears on the map.
How to Use a Lensatic Compass: A Guide for Hikers On your map, shoot the back bearing that you just took with your compass from the top of Saddle Mountain. Welcome back to the Art of ManlinessLand Navigation Manual. Place your map on a horizontal surface and then place the compass on the map so that the orienting arrow points to true north on the map. orient a map to the ground by map-terrain association, Sunday Firesides: Become an Evangelist . If you want to navigate and explore like a Navy SEAL, its high time you learn how to use one of these stellar compasses. Knowing how to orientate a map is just one facet of the wider skill of knowing how to read a map.
List of Ten Best Compass For Hunting Top Picks 2023 Reviews A map and compass are useless unless you know how to use them properly. It will make it easier to understand why we adjust for declination in the first place. Assume youre in the Adirondack Mountains of New York. That can make a huge difference! 3. We know were someplace south of Saddle Mountain on HW 115. For this, they use a lensatic compass, among other navigation equipment and techniques. Step 2: Line up your lensatic compass with the North Star and make sure the index mark is on the star. Program, Strengthen Your Tribe: A Report on the Atomic Athlete Vanguard, The Best Riddles for Kids (With Answers! 2. This may arise when you don't know your current position but have taken a back bearing from a visible landmark (1) you can identify on the map. Now it's time to take out the map. 2. You can use it to find your bearings in any direction you need to go.
PDF Lensatic Compass or Military Compass Basic Use. - Survival Primer Open the compass: Let the cover and the base form a 90-degree angle. Not a problem. Shoot a bearing with your compass at the peak of Saddle Mountain. How can you get your point position then? 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. Leave your orientating arrow in line with the index line and the direction of travel arrow, as it will already be primed to point magnetic north. Flip up the lid to a 90-degree angle. Using your location as a pivot, rotate the compass until north on the bezel is pointing to the top of the map and the compass housing orienting lines are parallel with the map's vertical grid lines. What happens if you dont compensate for declination with your compass? Required fields are marked *. The map is now oriented to the terrain. If youre facing south, but are holding the map right side up, everything on your map is going to be ass-backwards. In addition to 360 degrees to measure directions in a circle, the military also uses 6,400 mils. When the actual lens gets damaged, it unnecessarily impairs simple operation. Draw a line on the map at 130 degrees from Saddle Mountain. Now were going to find out where exactly we are on that line. ), Set Your Compass for Your Intended Azimuth. Check the declination of your local location on your map or on a website. 3. Picture 1: Map Declination. Bear in mind that an east declination value will be a positive number, and a west declination value will be a negative number. 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. This step comes after aligning our map and compass needle to magnetic north if using a compass that doesnt have a declination adjustment key. Then, slide your compass around so that its edge passes through the landmark on the map, while the orienting arrow continues to point north. Note: This procedure places the fixed black index line of the compass parallel to north-south grid lines of the map. EMERGENCY PREPAREDNESS & More: A Manual On Food Storage and Survival: 2nd Edition Revised and Updated. Come to think of it, I dont even know if he had a compass. A visualization depicting the Soldier's Manual of Common Tasks (STP 21-1-SMCT) task Orient a Map Using a Lensatic Compass (071-COM-1011).
Old-School Navigation: How to Use a Map and Compass