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    Re: Wobbly Prime Meridian
    From: Hewitt Schlereth
    Date: 2010 Nov 24, 11:15 -0400

    On 11/24/10, Gary LaPook  wrote:
    > The original post had the coordinates as N 51 28.674' W 000 00.088'.
    > Frank has the coordinates for the same place from Google Earth as
    > lat/lon=51.477895,-0.001506.
    > Converting to sexigesimal makes the Google Earth coordinates:
    > N 51 28.6737' W 000 00.09036
    > So the differences between the Google Earth coordinates and the coordinates
    > from the GPS being evaluated is zero in latitude (rounded to the same
    > precision) and in longitude .002' (again rounded to the same precision)
    > about 7 feet, or 2 meters, close enough for most practical navigation so
    > don't throw that GPS away.
    > gl
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