How to orient a map to True North
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Published 2017-09-05
Survival expert Jessie Krebs shows how to use a compass to orient a map to True North, not Magnetic North.
All Comments (21)
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EXCELLENT! There are a lot of videos on YT of people teaching improper orientation of a map (i.e. compass needle aligned with grid north). Thank you for presenting the correct method.
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To be exact, you pointed to the GM angle on your map which is the difference between grid north and magnetic north; true north does not come into the conversation.
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Good lecture & simple . Thanks 👍👍👍👍👍
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Need more compass videos please. Thanks!
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Once oriented as explained in your video, can you then take a bearing off the map and proceed to follow that bearing in the real world without the need to adjust for magnetic declination any further?
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Hello I am on east coast.. I have some older topo maps that are 30+ years old that I would LIKE to still use. For example they indicate around 6-7 degree (depending on map) declination. I looked online and today its about 10.4. Can I set my compass to the 10.4 offset and still use the older map? orienting the map to true north but with today's declination? Also, when I travel my route I assume leave the declination offset in place on my compass. Thank you...
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Nice and simple..
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Never knew about the neat line. Spent alot of time studying about it. Cool.
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So If I understood, the map is always oriented towards grid. My declination is positive 13°east. I have set my compass to 347° but I'm wondering why it's not set to 13°? I think what confuses me is Left Add Right Subtract(LARS/Magnetic to Grid Add Grid to Magnetic Subtract) can someone help me out thanks!
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Am i crazy, does orienting a map affect the conversion from magnetic bearings to a plottable map grid coordinate in anyway? Orienting a map is just convenient to make sure when you look up from the map you are looking at the right land features, right? It doesnt actually affect any math??
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감사합니다 😁
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I'm new here. Just arrived. It really enrages me when people don't, can't or won't orientate a map to north. It drives me nuts.
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Hey Jesse, what if my map has a difference of 19.5 degrees west? Would I add or subtract that? Cheers
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How would you add something like 10 west? Like, how would you put 370 on a compass?
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is there difference between grid N and true N and do we need to account for that? Is true N same as Grid N? Magnetic is clear. Those 2 unclear. I will simply do my own research but your perspective would be much appreciated too. Thank you.
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Why would you use true north as opposed to magnetic north? We always used magnetic to grid with our declination as well.
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hmm.. unless I am much mistaken the sequence is as follows: reconcile for the difference between poles (True N and Magn N) , then align the compass with the side line/edge of the map, rotate until red in the shed. A little bit mind-boggling as each tutorial teaches it its own way =SS For instance Some people adjust declination, then place compass on the map aligning with the meridian (or the side line/edge of the map), then align manually the N indicator (on the bezel dial/ring) with the index pointer (which is where the direction of the travel arrow begins) and then rotate the map. I.e. here https://www.youtube.com/watch?v=a2aGiUl1u4c&t=77s thank you.
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Where did you get that Map?
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So the other lines on the map are the grid north lines?
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Thanks, now why couldn't all the other talking heads on here explain it concise like you did instead of going about it like a calculus class?