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    Re: Current Sextant Manufacturers
    From: Alexandre Eremenko
    Date: 2012 Mar 30, 17:45 -0400

    Bill,
    
    > I suspect however, that the differences in stiffness are of little
    > practical importance, until the sextant is dropped. Bronze frames bend.
    
    I mentioned that I mostly practice Lunars. For the Lunars, the frame
    rigidity is of prime importance. Because you hold the sextant in all
    possible positions, by the frame, by the handle, upside down etc.
    I could clearly see with 11x (native) telescope,
    how the C. Plath (circ 1910-1918)
    frame bends. I am talking of 0'3-0'5 of difference when you hold
    the sextant differently.
    
    Of course, no practical significance when you only take altitudes,
    and always hold it by the handle, vertically.
    
    In general, as I noticed once, SNO-T is a dream sextant for a XVIII
    century
    Lunarian:-) With its 140d arc, front silvered mirrors, and cross wires
    in the telescope:-)
    Why they made it like this? Probably for taking horizontal angles...
    For coast navigation, pointing the guns etc:-)
    Why else one wold need 140d at sea...
    
    > I am not a rich man and the book sales are unlikely to make me one :-).
    
    Sure. You have to write on a different subject to make money:-)
    Neither you will make money by making dip meters, and I afraid to say,
    by sextant repair:-)
    
    Spekaing of the prices, my impression is the same. SNO-T went up somewhat,
    early or mid century with bronze frames down, early XIX century and
    wood octants up (and becoming more rare). The supply of Russian
    chronometers seems to be exhausting. And they sell Russian deck watches
    for $999 nowadays, which is much more than I payed for a chronmeter
    5 years ago.
    (perhaps the greatest increase among all such all items).
    
    Alex.
    
    
    
    
    

       
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