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    Douglas-Appleyard Arcless Sextant - Help
    From: John D. Howard
    Date: 2019 Mar 31, 11:53 -0700

    Hello all,

    I am having no luck finding information on this sextant.  Searching the UK patents there is no record of patent 13689/16, no record of any patent by Douglas or Appleyard, nor any patent for an arcless sextant.

    I know Douglas was an inventor ( Douglas Protractor ) but does not seem to hold any patents.  Same for Appleyard,

    A patent the US is easy to find by number but not so easy in the UK.  Any help would be nice.

    Thanks,    John H.

       
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