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    Re: Compass - southern hemisphere/northern hemisphere
    From: Trevor Kenchington
    Date: 2004 Oct 20, 20:20 +0000

    Lisa,
    
    Look in the list's archives around June 20 of this year, for a thread
    with the subject line "Historical Magnetic Variation/Declination". We
    pretty much thrashed the topic to death then.
    
    
    Trevor Kenchington
    
    
    
    You wrote:
    
    > Our hand bearing compass is one designed for the southern hemisphere, as
    > we're in Australia. I remember being taught that it's important to have
    > a southern hemisphere compass in the southern latitudes and a northern
    > hemisphere compass in the northern latitudes.
    >
    > What's the principle involved here, and how did the early navigators (eg
    > going from Europe to rounding Cape Horn etc.) compensate?
    >
    > Thanks, Lisa
    >
    
    
    --
    Trevor J. Kenchington PhD                         Gadus{at}iStar.ca
    Gadus Associates,                                 Office(902) 889-9250
    R.R.#1, Musquodoboit Harbour,                     Fax   (902) 889-9251
    Nova Scotia  B0J 2L0, CANADA                      Home  (902) 889-3555
    
                         Science Serving the Fisheries
                          http://home.istar.ca/~gadus
    
    
    

       
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