Recent Posts

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New Member Introductions / Re: Change in the Earth's magnetic position.
« Last post by Brynglas on February 07, 2017, 08:57:13 AM »
Good to see that there's still a bit of traffic on this forum.

Magnetic Declaration is constantly changes, albeit at a calculable rate. If your journeying over relatively short distances the declaration doesn't create such an error. Declaration obviously becomes a much more significant factored over longer distances.

I always try to calculates the factored in, but with changes of less than a degree this isn't so practicable on a day to day basis.

Some interesting info here:

https://www.ngdc.noaa.gov/geomag/declination.shtml
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New Member Introductions / Re: Change in the Earth's magnetic position.
« Last post by Lost Soul on February 05, 2017, 12:34:05 PM »
Hi Terry,

Welcome to the Forum.  Its bit slow these days but still a great resource. If you do a search on past threads and post you will find information on the subject. 

To answer your question.  Any OS map is obsolete on the day it was sent to the printers let alone the day it is published.  Changes are continuous.  New roads and all that. 

In reality the very small change in magnetic field is not significant in the short term.  Which means if you are using a current map then all is well.  There is no way you are going to be measuring 0.25 of a degree on a hand held compass.  However, the changes do build up as the years roll by and information given on a ageing map is going to become increasingly inaccurate.  Both in terms of magnetic data and topographical data.  Bottom line always use a current map.

Lost Soul
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New Member Introductions / Change in the Earth's magnetic position.
« Last post by Terry on February 03, 2017, 11:44:02 AM »
Recently I read that the Earth's magnetic position had moved, thus making all the data on OS maps obsolete. I have been trying to understand 'magnetic declination'. Where I live, just North of Dartmoor, the 'Grid Magnetic Angle Calculator' informs me that magnetic North is now 0 degrees 25' west. As I understand it there are 60' to a degree, thus making this change fairly insignificant, is that assumption correct?
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Training tips / Re: Ultimate Navigation School - Launched!
« Last post by Brynglas on January 30, 2017, 11:24:24 PM »
This looks like a great product, good luck with it.
Sadly, I don't think this forum/ communication get much traffic at all these days.
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Training tips / Ultimate Navigation School - Launched!
« Last post by Paul Hitchen on January 29, 2017, 05:40:48 PM »
Lyle has launched a new charity called the Ultimate Navigation School!

The school provides navigation courses across the Uk for the public through to Mountain Rescue and Special forces selection candidates. Courses are from Foundation through to Advanced levels in land navigation and sat nav skills.  The courses are externally accredited too by OpenAwards so they count as professional development courses.

But the best part is....All the net profit from the School goes to four charities who support the hills we all love - The John Muir Trust, Mend the Mountains, Fix the Fells and The Mountain Bothy Association.

The new website is here www.ultimatenavigationschool.co.uk

Lyle's channel trailer on youtube is here https://www.youtube.com/watch?v=Ko4i4BcoiXI

If the great navigation community on micronavigation.com could help the charity by making people aware of its launch - it would be much appreciated!

best regards and many thanks   :D

Paul.
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General navigational Kit / Re: Marking Harveys Maps
« Last post by Brynglas on January 09, 2017, 11:57:44 PM »
Hi,  Thanks for that, not a bad idea, I'll have a look at that. I like the details on Harveys Maps but they are difficult to annotate.
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General navigational Kit / Re: Marking Harveys Maps
« Last post by ianj37 on January 03, 2017, 11:39:23 AM »

Hello Brynglas, welcome to the forum.
I have solved this problem, at least to my satisfaction, but it wasn't cheap! I sent my Harvey map to Aqua3 who are based in the Peak District and for 11.99 they laminated it (still going strong after 3 years). It still folds into the original Harvey plastic packet but I can write on it with Stabilo permanent OPH pens and remove with alcohol wipes. Both the pens and the wipes are available from Lyle's on line Shaven Raspberry site but I have to confess to preferring the super fine pens to the fine that Shaven Raspberry sell.

Ian
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General navigational Kit / Re: Marking Harveys Maps
« Last post by Brynglas on December 28, 2016, 10:48:59 AM »
Hi, Happy Holiday.

Harveys Maps are a very good British made maps system that use their own details and data to produce maps aimed specifically at walkers and climbers in the UK. As such they are a very good product for use in UK mountain areas in additionally to regular OS maps.

Harveys use a very good waterproof paper which has the feel and texture of paper but is very tough and waterproof, as such chinagraph and lumocolour don't work very well, If you apply any alcohol to erase them it degrades the paper and lifts the print.

I've always used a softened pencils on OS maps, a hangover to my days of marking nautical charts, but I was looking at workable option to allowance colour marking/ notation on Harveys Maps.

I'll continue my resource and report back in due course.

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General Discussion / Re: Merry Christmas
« Last post by Lost Soul on December 26, 2016, 12:53:08 PM »
Yes, merry Christmas and a happy new year to all.

Lost Soul.
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General navigational Kit / Re: Marking Harveys Maps
« Last post by Lost Soul on December 26, 2016, 12:48:55 PM »
Hi Brynglas

Are the maps plasticised?  If so then in my experience the only means of marking plasticised  maps is with a chinagraph pencil or lumograph pens.  But both tend too rub of easily when the map is being used.  Ughh!.  The best way to clean the map is with furniture polish or meths.

If the map is paper then a B6 pencil is very good.  Normal soft eraser cleans them up quite nicely with little residual damage.

Hope this helps.

 
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