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    Re: The development of bubble sextants
    From: Douglas Simpson
    Date: 2009 Aug 13, 08:15 +0800
    Good link gl, thanks for that
    Regards
    Doug

    On Thu, Aug 13, 2009 at 7:08 AM, <glapook---.net> wrote:

    Attached is an excerpt from the book "Precision Astrolabe" describing the development of aviation bubble sextants.

    gl
    Linked File: http://www.fer3.com/arc/imgx/Bubble-sextants-Precision-Astrolabe.pdf

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