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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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    Re: Dropped sextants
    From: Jean-Philippe Planas
    Date: 2011 Mar 21, 13:52 -0700
    Dear Bill,

    This is the most thrilling restoration story I have ever read. Of course this kind of restoration is out of reach for most of us, simple sinners, as it requires both an outstanding craftsmanship in mechanical engineering and the availability of machine tools with specific accessories such as this homemade division plate that I appreciated very much.
    The end product is a real masterpiece.
    Thank you Bill for taking the time to share with us your restoration adventures. When reading your stories, I learn practical tricks and techniques almost every other line.
    Just one question for you Bill. Why did you have to make a new drum? For aesthetical grounds? The original one seems to be damaged only very locally and still fully functionnal.
    By the way, when you quote Figure 2 in the text, I beleave it should be figure 3 instead.
    As for the price, considering the "as new" condition, and the trust I have in the skills of the restorer, I beleave this instrument could  easily go for at least 450-500 USD on Ebay. Just a shame the box is not mahogany, but bakelite which is less glamorous.
    Congratulation again for this outstanding restoration job.

    JPP


    --- On Sat, 3/19/11, Bill Morris <engineer{at}clear.net.nz> wrote:

    From: Bill Morris <engineer{at}clear.net.nz>
    Subject: [NavList] Dropped sextants
    To: NavList@fer3.com
    Date: Saturday, March 19, 2011, 11:44 PM

    When sextants are accidentally dropped onto hard surfaces, bits that stick out, like shades and micrometer shaft commonly get bent or broken. While the frames of alloy sextants are very rigid and do not seem to bend when dropped, bronze frames can certainly be bent in a fall and this can introduce large errors.

    In a recent blog post, that may interest those who love sextants, I have told the story of the near-death experience of an old C Plath micrometer sextant. On reaching the end of http://sextantbook.com/2011/03/20/c-plath-sextant-lives-again/ I doubt there will be many dry eyes...

    Bill Morris
    Pukenui
    New Zealand
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