by "TonyB" <hatt.j.bennett@[EMAIL PROTECTED]
>
May 17, 2008 at 04:59 PM
"Wilbur Hubbard" <wilburhubbard@[EMAIL PROTECTED]
> wrote in message
news:482efd74$0$213$892e0abb@[EMAIL PROTECTED]
>
> "TonyB" <hatt.j.bennett@[EMAIL PROTECTED]
> wrote in message
> news:OuqdnR7tdafRU7PVnZ2dnUVZ8vWdnZ2d@[EMAIL PROTECTED]
>> On my chart Imray G11 I have a compass rose which shows in writing
>> "Variation 2º 45' E (2005) Increasing about 5' annually."
>>
>> Fine. But the compass rose points to 5º on the true north ring rather
>> than
>> 2.45 - why is this?
>>
>> Thanks
>> TonyB
>
> There's something you've failed to consider - deviation. Deviation is a
> local variance caused by metallic objects or electrical fields in or
> around the compass. You should swing your compass and derive a deviation
> table for every 10 or 15 degrees. Remember True Virgins Make Dull
> Companions.
>
>
http://acronyms.thefreedictionary.com/True+Virgins+Make+Dull+Companions+(mnemonic+for+navigation+formula)
>
> Wilbur Hubbard
Dear Wilbur,
I can always rely on you for a laugh. Deviation is a property of a
magnetic
compass, not of the writing on a chart.
I am referring only to the chart, not to the compass itself. Many thanks,
but 0/10 for the result,
10/10 for effort!
TonyB
>
>
