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    Re: Sextant frames
    From: Fred Hebard
    Date: 2009 Apr 15, 23:02 -0400

    Thank you for the very nice discussion of frames.  There may be some
    merit in the weight of bronze frames for stability.  Bronze also
    doesn't corrode as readily when exposed to salt water, as you point
    out.  I have seen several sextants on ebay that were strongly
    corroded.  I wonder what is the merit in the bronze of a bronze arc
    attached to an aluminum frame.
    
    Fred
    
    On Apr 15, 2009, at 10:46 PM,  wrote:
    > The corrosion resistance of the aluminium alloys used is not
    > perhaps as good as that of the traditional bronze, but the
    > increased stiffness and reduced weight give the alloy frames a
    > clear advantage.
    
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