"TonyB" <hatt.j.bennett@[EMAIL PROTECTED]
> wrote in message
news:jpCdnXN6I7xInbLVnZ2dnUVZ8gidnZ2d@[EMAIL PROTECTED]
>
> "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
If you'd learn how to write a coherent sentence perhaps you'd avoid
causing
confusion. You clearly stated:
"Fine. But the compass rose points to 5º on the true north ring rather
than
2.45 - why is this?"
Do you not realize that a compass rose is also printed on a magnetic
compass
card? So, you should have written "Fine. But the chart compass rose
points
to 5º on the true north ring rather than 2.45 - why is this?
Wilbur Hubbard
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