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    Re: New compact backup CELNAV system
    From: Andrew Nikitin
    Date: 2009 Mar 20, 12:20 -0700

    > From: GSchwartz---com
    > Date: 20 Mar 2009 10:06
    > How does this work?
    You find the date on the outside scale and corresponding declination on the
    inside scale (the one that runs from -23 to 23).
    Long tickmarks labeled with month name correspond to the 0:00 UT first day of
    this month. Longer tickmarks are 5-th 10-th, 15-th, etc.
    Days on the left scale run from bottom to top (declination is increasing with
    time), days on the right scale run from top to bottom (declination is
    decreasing with time).
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