Aren't you missing the subtraction of 180? If your bearing to the POI is 120 then when drawing on the map its a bearing of 030 TOWARD your location. Then for the second point its 300 from the other POI toward your location.
If you take a bearing of 120 to something, then draw that line (120) on the map, then draw an other line. It doesn't matter if it's "to" or "from", as long as the lines your draw are long enough to cross. To a pencil running down the side of a compass, a 120 line or a 300 line are the same.
@@TheMapReadingCompany I understand the comment because back-azimuth is taught in military and scouting orienteering as a way to plot from the POI back to the unknown point.(with declination) However, your method hit me like a ton of bricks, in that any protractor or compass can be moved around to draw the line with either. I have to think it is taught that way so folks without a map can describe where they are and others understand how to work it backwards.
This should explain it: mapreading.co.uk/why-the-magnetic-north-pole-moves. I was going to do this as a video but I don't have an animation software, so I did it as a blog.
Always a great vid.. thanks for the info.. this may sound stupid.. but could you do a video of how to fold a map into a case as used in this video.. I always end up screwing it up or adding unwanted creases.. or is that just how it is..please..
OK, I'll add it to the list. I have a LONG list of videos "to do" that would take millions of years at 1 every week or so. But this is a question I get asked on my courses quite often so I'll push it up the list.
How can you say that that one is Rye Loaf trig point and not one other trig point on the map? How can you say that the intersection is exactly that one and not one other intersection on the map? Truly interested because every time someone says you have to figure out two recognisable spot on the map I got consfused because on the map there are always a bunch of intersections, a bunch of trig points, a bunch of peaks and so on. Sorry for my bad english but I am Italian. I know you can also speak Italian so you will forgive me. Very good channel and good job by the way!
Questa è una buona domanda. Sto preparando un video su questo, presto (entro poche settimane). In inglese si dice “Feature Recognition” (riconoscimento delle caratteristiche)
4:50 Frances Barker compass, just got an email back on price availability, keen to get one...picked up my Cammenga last week, chasing up some military protractors on backorder, think I've sourced some in the meantime. Appreciate your channel thankyou. May I ask, have you had military training, your knowledge is extensive. Surprising how many retail outlets supply gps devices and not protractors. Batteries go flat I tell them .🇦🇺🇬🇧
What happened to DMS or DD locations instead of other grid references in the resection? I saw them later in the intersection though. We use maidenhead for amateur radio, I have never looked at the history of those.
Hi, sorry but I never recommend which compasses (or anything else) people should buy. Yeah I know 😂 virtually everyone on RUclips ask people to buy something so they can earn some commission, but I don’t. But I would suggest that: If you are walking over short distances or in complex terrain e.g. rocky area, forests, etc then you should get a good quality base plate compass. If you're walking over longer distances in open terrain then a mirror compass would help. If you need precise bearings then a lensatic or prismatic would be a good idea. If you really need to know the gradient of a slope e.g. off-piste skiing, etc then get one with an inclinometer. If you’re a novice navigator, so only taking bearings from a map and not from ground features, then you could look at a compass with an in-built declination adjustment. If you eye-sight isn’t too good then try and get a compass with a large magnifying area. Etc.
@@TheMapReadingCompany If in-built declination adjustment is a bit of a pain because you need to make the opposite adjustment when transferring back to map, would carrying two compasses be considered 'cheating'? One set for map-to-world declination and the other set for world-to-map declination. Edit: Oh, but I think it would be the same with the in-built adjustment whether going from map or to the map, because you're physically offsetting the orienting arrow from the orienting lines and so any operation between the two automatically adds or subtracts that difference regardless of which way you go. But I'm a novice and can't test as I don't have one, so let me know if I'm missing something. Was looking to buy one until I saw your comment and now I'm not so sure.
Your compass and navigation videos are the best on RUclips! Seriously.
I was thinking the same!!! 🎉❤😊😅
100%
Please do a video on the best grid system to use with a compass. UTM?GCS? MGRS? I’m so confused!
Fantastic content all the time, thank you so much. You bring it a cross with a bit of humor as well, fab.
Aren't you missing the subtraction of 180? If your bearing to the POI is 120 then when drawing on the map its a bearing of 030 TOWARD your location. Then for the second point its 300 from the other POI toward your location.
If you take a bearing of 120 to something, then draw that line (120) on the map, then draw an other line. It doesn't matter if it's "to" or "from", as long as the lines your draw are long enough to cross. To a pencil running down the side of a compass, a 120 line or a 300 line are the same.
@@TheMapReadingCompany I understand the comment because back-azimuth is taught in military and scouting orienteering as a way to plot from the POI back to the unknown point.(with declination) However, your method hit me like a ton of bricks, in that any protractor or compass can be moved around to draw the line with either. I have to think it is taught that way so folks without a map can describe where they are and others understand how to work it backwards.
How did you luck out with almost no magnetic declination? I have almost 15 degrees where I live.
This should explain it:
mapreading.co.uk/why-the-magnetic-north-pole-moves.
I was going to do this as a video but I don't have an animation software, so I did it as a blog.
Always a great vid.. thanks for the info.. this may sound stupid.. but could you do a video of how to fold a map into a case as used in this video.. I always end up screwing it up or adding unwanted creases.. or is that just how it is..please..
OK, I'll add it to the list. I have a LONG list of videos "to do" that would take millions of years at 1 every week or so.
But this is a question I get asked on my courses quite often so I'll push it up the list.
you are a great teacher.
How can you say that that one is Rye Loaf trig point and not one other trig point on the map? How can you say that the intersection is exactly that one and not one other intersection on the map? Truly interested because every time someone says you have to figure out two recognisable spot on the map I got consfused because on the map there are always a bunch of intersections, a bunch of trig points, a bunch of peaks and so on.
Sorry for my bad english but I am Italian. I know you can also speak Italian so you will forgive me.
Very good channel and good job by the way!
Questa è una buona domanda. Sto preparando un video su questo, presto (entro poche settimane). In inglese si dice “Feature Recognition” (riconoscimento delle caratteristiche)
A great teacher needs to write a book😊.
The issue we have here in the states is that we are frequently in forest with limited to no reference points
He did a video on navigating in a forest
If you can dig up an old BBC TV programme called "TRACKS" , a very young Ray Mears will show you how to navigate through a thick Finnish forest.
4:50 Frances Barker compass, just got an email back on price availability, keen to get one...picked up my Cammenga last week, chasing up some military protractors on backorder, think I've sourced some in the meantime. Appreciate your channel thankyou. May I ask, have you had military training, your knowledge is extensive. Surprising how many retail outlets supply gps devices and not protractors. Batteries go flat I tell them .🇦🇺🇬🇧
I love it !!!
Thanks for the video. I always learn something new and always get a pretty good chuckle. That's a pretty good combination!
Grizedales! Where are you, Grizedales!
😁
Yes, this video was made in the Grizedales - around the Mappa Cross area.
What happened to DMS or DD locations instead of other grid references in the resection?
I saw them later in the intersection though. We use maidenhead for amateur radio, I have never looked at the history of those.
Brilliant, thanks for a great explanation and video. Cheers
Excellent, I'm learning lots from this channel.
I'm confused. At 4m58s I thought that 98 was the bearing from the shape and 221 was the bearing from the wall junction.
Cheers, Chris
Hi, yes you are correct. The graphic at at 4:58 shows the bearing lines of the transition to the point of interest.
I only use Silva because they are so good.
Nice video, and quite a flex of how many nice compasses you have!
You can never have enough compasses 😊
Over there.
Great video!what small pocket compass with thermometer you recommend?
Hi, sorry but I never recommend which compasses (or anything else) people should buy.
Yeah I know 😂 virtually everyone on RUclips ask people to buy something so they can earn some commission, but I don’t.
But I would suggest that:
If you are walking over short distances or in complex terrain e.g. rocky area, forests, etc then you should get a good quality base plate compass.
If you're walking over longer distances in open terrain then a mirror compass would help.
If you need precise bearings then a lensatic or prismatic would be a good idea.
If you really need to know the gradient of a slope e.g. off-piste skiing, etc then get one with an inclinometer.
If you’re a novice navigator, so only taking bearings from a map and not from ground features, then you could look at a compass with an in-built declination adjustment.
If you eye-sight isn’t too good then try and get a compass with a large magnifying area.
Etc.
@@TheMapReadingCompany If in-built declination adjustment is a bit of a pain because you need to make the opposite adjustment when transferring back to map, would carrying two compasses be considered 'cheating'? One set for map-to-world declination and the other set for world-to-map declination.
Edit: Oh, but I think it would be the same with the in-built adjustment whether going from map or to the map, because you're physically offsetting the orienting arrow from the orienting lines and so any operation between the two automatically adds or subtracts that difference regardless of which way you go. But I'm a novice and can't test as I don't have one, so let me know if I'm missing something. Was looking to buy one until I saw your comment and now I'm not so sure.
If two different compasses are used there may be error
Mostly if you hold them together
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Wow thank you for taking the time to answer my question in the best way possible!
No problems. I thought that your question needed a little more explanation than could be given in a few words in a reply box.
Thanks for the question.
@@TheMapReadingCompany my pleasure!
What a gem of a channel, excellent content
Thanks Terry