Thanks for another great video. One thing im not 100% sure about with a semi permenant declination compass that is set to say 10 degree east. If going from compass to map would you add declination twice? Ive watched your waves video though doesnt show a semi permanent compass example.
Have a watch of the video again. The compass WAvES BACKWARDS at you - so the declination is reversed (backwards). From a Map to a Compass (in your case) SUBTRACT 10 degrees from the grid bearing From a Compass to a Map (in your case) ADD 10 degrees from the magnetic bearing
@@TheMapReadingCompany thank you. Yes I understand with a manual compass (very well explained) though confused in the event you adjust the screw to set semi permanent declination. Love to buy you a cuppa if you have a method to transfer.
@@TheMapReadingCompany Ok think I've finally understood it. Not having a compass that can adjust the declination didn't help. Even though the direction of travel would be right the bearing indicated on the compass is true north not magnetic when it's been semi permanent adjusted. Is that right?
I get that when you set your declination it automatically adds it when you are getting a bearing to walk on But dose the same work when you shoot a bearing to a location and bring thst bearing to the map?
Hi Peter, no it doesn't. Have a look at my WavES video where this is gone through in some detail. Link to WAvES: th-cam.com/video/Tf9rrmq5Vf8/w-d-xo.html
I was confused about this also and did some tests. One compass (Silva expedition) with declination semi permanently set and another with no declination set (Silva field). The compass that has the declination semi permanently set will give you the grid bearing not magnetic meaning no manual adjustment required when going to or from the map. I.e. when shooting a bearing to an object compass semi permanently set to 12 degrees east (declination is added on when going back to map for east) read 362 degrees. Compass without declination set read 350 degrees.
some step is missing perhaps? doesn't the map need to be oriented N first? what happened to red in the shed? I have a Brunton and the declination is a bear to set.
Hi Matt Thanks for joining the conversation. When using a map with a compass there is no need to orientate your map northwards. In the video “red in the shed” is discussed at 05.39. I don’t do “reviews” but Brunton do seem to have removed a good deal of their compass’s functionality just to allow tool free declination adjustment, which seems to me to be a strange thing to do. And yes I agree with you that Brunton’s are not easy to adjust.
I believe the reason we (or, rather "they", since I'm not the guy anymore) went tool-free was at least in part because people would somehow lose the tool. Don't ask me how, but it happened. Also, those old ones were tricky to fix: It was like repairing a watch.
@@TheMapReadingCompany More than getting used to...I had to have my husband do it. I couldn't apply enough pressure. Thought not having to use a tool would be a plus - for me, it isn't.
Thanks for another great video. One thing im not 100% sure about with a semi permenant declination compass that is set to say 10 degree east. If going from compass to map would you add declination twice? Ive watched your waves video though doesnt show a semi permanent compass example.
Have a watch of the video again.
The compass WAvES BACKWARDS at you - so the declination is reversed (backwards).
From a Map to a Compass (in your case) SUBTRACT 10 degrees from the grid bearing
From a Compass to a Map (in your case) ADD 10 degrees from the magnetic bearing
@@TheMapReadingCompany thank you. Yes I understand with a manual compass (very well explained) though confused in the event you adjust the screw to set semi permanent declination. Love to buy you a cuppa if you have a method to transfer.
@@TheMapReadingCompany Ok think I've finally understood it. Not having a compass that can adjust the declination didn't help. Even though the direction of travel would be right the bearing indicated on the compass is true north not magnetic when it's been semi permanent adjusted. Is that right?
I get that when you set your declination it automatically adds it when you are getting a bearing to walk on
But dose the same work when you shoot a bearing to a location and bring thst bearing to the map?
Hi Peter, no it doesn't. Have a look at my WavES video where this is gone through in some detail.
Link to WAvES: th-cam.com/video/Tf9rrmq5Vf8/w-d-xo.html
I was confused about this also and did some tests. One compass (Silva expedition) with declination semi permanently set and another with no declination set (Silva field). The compass that has the declination semi permanently set will give you the grid bearing not magnetic meaning no manual adjustment required when going to or from the map. I.e. when shooting a bearing to an object compass semi permanently set to 12 degrees east (declination is added on when going back to map for east) read 362 degrees. Compass without declination set read 350 degrees.
some step is missing perhaps? doesn't the map need to be oriented N first? what happened to red in the shed? I have a Brunton and the declination is a bear to set.
Hi Matt
Thanks for joining the conversation. When using a map with a compass there is no need to orientate your map northwards. In the video “red in the shed” is discussed at 05.39.
I don’t do “reviews” but Brunton do seem to have removed a good deal of their compass’s functionality just to allow tool free declination adjustment, which seems to me to be a strange thing to do.
And yes I agree with you that Brunton’s are not easy to adjust.
I believe the reason we (or, rather "they", since I'm not the guy anymore) went tool-free was at least in part because people would somehow lose the tool. Don't ask me how, but it happened. Also, those old ones were tricky to fix: It was like repairing a watch.
Dang that's hard to adjust.
Yes, it take a little getting use to.
@@TheMapReadingCompany More than getting used to...I had to have my husband do it. I couldn't apply enough pressure. Thought not having to use a tool would be a plus - for me, it isn't.