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    Re: sight reduction tables
    From: Peter Fogg
    Date: 2007 Sep 30, 10:16 +1000
    George proposes:

    And yet there's a bit of a contradiction here, it seems to me, in the
    attitude of many small-boat navigators; those who prize their expensive
    sextants, reading to 0.1 arc-minutes, and wouldn't be seen dead using a
    plastic sextant, no matter how good it may happen to be. I raise this matter
    at the risk of reopening old wounds here, but it would seem to me that if
    HO249 is acceptably accurate, then so too would be a decent plastic sextant.
    I'm not arguing against Gary here; I simply don't know whether he is a
    member of the diehard posh-sextant brigade or not. But they exist, and for
    them, would the 1-minute precision of HO249 be considered good enough?

    I suspect that the issues are not so simply comparable, George. One of the problems with plastic sextants is their unreliability, rather than lack of precision.


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