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    Re: Sextant calibration. Re: Coordinates on Cook's maps
    From: Alexandre Eremenko
    Date: 2007 Apr 22, 15:57 -0400

    On Sat, 21 Apr 2007, Gary J. LaPook wrote:
    > My Tamaya MS-833 serial number 63890 which I bought new in 1981 has all
    > zeros.
    Which confirms what I said about the results of my
    e-bay research.
    What else, after 1940, except some Tamayas,
    has a certificate
    with all zeros? Can the list members give me ONE example?
    C. Plath and
    Cassens Plath are
    not considered because they DO NOT provide a certificate
    with a list of errors.
    I have a wild guess: this depends on whether
    the manufacturer has testing equipment or not:-)
    Freiberger and SNO do have the equipment (I know!),
    so they provide certificates with errors listed.
    They are usually not all zeros.
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