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    Re: minus index corr better than plus
    From: Russell Sher
    Date: 2000 Jul 25, 03:29 EDT

    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{at}XXX.XXX]
    Sent: Tuesday, July 25, 2000 9:16 AM
    To: NAVIGATION-L{at}XXX.XXX
    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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