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DennisN
Tired Old Man
Joined: Feb 27, 2006
Posts: 14907
Location: Keynsham
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 Posted: Thu Mar 17, 2011 11:41 pm Post subject: |
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| Andy_P wrote: | | Oh Gawd! I thought you were joking |
Oh Gawd! I was.
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Dennis
If it tastes good - it's fattening.
Two of them are obesiting!! |
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Guivre46
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Joined: Apr 14, 2010
Posts: 1262
Location: West London
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| Posted: Thu Mar 17, 2011 11:44 pm Post subject: |
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....and I was reading that every few 100,000 years the earth's magnetic field flips over so N becomes S and vice-versa, and we are due a flip!
PS: I see there is an ad for digital compasses at the base of this thread 
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Mike R [aka Wyvern46]
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M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 10118
Location: Bexhill, South Sussex, UK
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| Posted: Fri Mar 18, 2011 12:14 am Post subject: |
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| mikealder wrote: | | M8TJT wrote: | | And what about grid north on OSGB? |
That's what the Mag Var offset value is for printed on the OS Map so you can work it out using the map, although "Self Centered" maps don't have the Mag Var applied to them  - Mike |
Don't foget the true north offset. I was only introducing a new and exciting north into the conversation  DNFTT
As a matter of interest, how did the TT compas work. Was it always 'north up' with the pointer swinging about such that if you were going west, the pointer would point in the 9 o'clock direction? If so, I can see how the confusion arises
| Guivre46 wrote: | | PS: I see there is an ad for digital compasses at the base of this thread |
It's a TTXL for £4.06 at the bottom of mine now. About what they are worth 
Last edited by M8TJT on Fri Mar 18, 2011 12:24 am; edited 2 times in total |
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DennisN
Tired Old Man
Joined: Feb 27, 2006
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Location: Keynsham
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| Posted: Fri Mar 18, 2011 12:21 am Post subject: |
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| Guivre46 wrote: | | ....and I was reading that every few 100,000 years the earth's magnetic field flips over so N becomes S and vice-versa, and we are due a flip! |
No problemo - I'll just get a bit of snopake and write S over the N on my compass. 
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Dennis
If it tastes good - it's fattening.
Two of them are obesiting!! |
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Guivre46
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Joined: Apr 14, 2010
Posts: 1262
Location: West London
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| Posted: Fri Mar 18, 2011 12:26 am Post subject: |
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I think my One XL allows me to turn the screen upside down - so no problems either!
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Mike R [aka Wyvern46]
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Darren
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Joined: 11/07/2002 14:36:40
Posts: 23848
Location: Hampshire, UK
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| Posted: Fri Mar 18, 2011 9:17 am Post subject: |
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And every few million years it flips, we're in a decline now with a pole reversal expected in a few thousand years - You have been forewarned 
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spook51
Lifetime Member
Joined: Mar 26, 2004
Posts: 548
Location: East Midlands
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| Posted: Fri Mar 18, 2011 11:00 am Post subject: |
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| Is it April 1st already....? |
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anchor
Occasional Visitor
Joined: Jul 25, 2005
Posts: 24
Location: Harrow, Middlesex
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| Posted: Fri Mar 18, 2011 5:00 pm Post subject: |
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I ignore the compass, and have set my 920 to show direction of travel in degrees.
"Status bar preferences--- (tick) direction--- "
It will show the direction of travel in degrees and letters. I find it easy to work out my direction from that. |
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2216
Regular Visitor
Joined: Dec 10, 2005
Posts: 245
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| Posted: Fri Mar 18, 2011 9:01 pm Post subject: |
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| If you are on the magnetic north pole then everything is south ! |
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M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 10118
Location: Bexhill, South Sussex, UK
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| Posted: Fri Mar 18, 2011 9:56 pm Post subject: |
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| 2216 wrote: | | If you are on the magnetic north pole then everything is south ! |
Wrong  . The geographic north pole is north of you |
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Guivre46
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Joined: Apr 14, 2010
Posts: 1262
Location: West London
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| Posted: Sat Mar 19, 2011 12:36 am Post subject: |
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If you suspend your TT from the rear-view mirror with a thick thread, it will consistently align itself with the earth's magnetic field. So no need to select compass in the status bar - problem solved!
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Mike R [aka Wyvern46]
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Guivre46
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| Posted: Sat Mar 19, 2011 12:44 pm Post subject: |
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Ummmm, last entry - must have had a better night than I thought I'd had....?
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Mike R [aka Wyvern46]
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