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    Re: On polar nav
    From: Peter Fogg
    Date: 2002 Sep 12, 11:35 +1000

    Walter Guinon wrote:
    
    > Is the behavior of a pendulum a useful indication of nearness to the pole?
    >
    
    Don't know, but among their lists of indispensable equipment to bring for
    hanging around the pole I've come across no mention of pendulums. My
    understanding of the method used was observations of the sun over a 24 hour
    period. After allowance for change of declination the altitude should remain
    the same all around the horizon at the pole.
    Another little mystery is why they used sextants rather than theodolites,
    which would seem to be more useful for the purpose.
    
    
    

       
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