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    Re: minus index corr better than plus
    From: Barry Hudson
    Date: 2000 Jul 25, 14:16 EDT

    You don't have to live with 2' off the arc, simply remove it.
    Barrie Hudson
    Russell Sher wrote:
    > How's this reasoning:
    > An 'on the arc' (negative) correction is easier to read since it is read
    > straight off the micrometer drum. An 'off the arc' error would be calculated
    > by reading the drum and taking the 60' complement - for example: An error of
    > 2' on the arc will be read as 2' when the instrument is being checked and
    > the error has been noted. An error of 2' off the arc will be 58' (
    > equivalent to -2').
    > correct??
    > Russell
    > -----Original Message-----
    > From: Paul Hirose [mailto:71202.2014@XXX.XXX]
    > Sent: Tuesday, July 25, 2000 9:16 AM
    > Subject: minus index corr better than plus
    > I've never seen this discussed anywhere, but I can think of two
    > reasons to prefer a negative sextant index correction rather than a
    > positive IC. Can anyone figure out what those reasons might be?

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