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    Re: Dual sight holes in antique octants?
    From: Andreas Klose
    Date: 2012 Feb 16, 23:05 -0800

    Hello,
    I would like to solve the mystery! But first I should introduce myself: My name is Andreas, I live in Hamburg and work for the agency that sells trips on the Russian sail training ships Sedov and Kruzenshtern. For many years I am dealing with the history of celestial navigation. And I must apologize for my bad English. But I try...
    The second left hole has only one meaning: to protect the Eye in sun observations. If you use it you will look at the left non-silvered (!) side of the horizon mirror. When the sun is very bright, it is enough to reflect an image. An important detail so the old shadow glasses were of course not protectiv enough!

    Kind regards to all members of NavList

    Andreas
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