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    Re: The Book of the Sextant, Hughes, 1915
    From: David Pike
    Date: 2022 Oct 19, 15:34 -0700

    Frank
    Hughes must have realised that there was about to become a sudden need for sextant knowledge.  The book was updated and printed in 1938.  I have the 1949 reprint of the 1938 edition.  In 1938 he included a chapter on air sextants and shows photographs of not only the Hughes MkVIII but also a MkXII sextant, which I’ve never heard of before and which doesn’t appear online.  Perhaps it was a Hughes prototype, which was never proceeded with, because the MKIX proved such a success.  Has anyone else come across the air sextant MkXII.  I’m not talking about the US Link A12 sextant.  DaveP

       
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