Am 11.06.26 um 23:40 schrieb Bald Eagle:
> MichaelJF <fri### [at] t-onlinede> wrote:
> 
>> I googled the words on the note attached and came up with the hint to a
>> nautrigon:
>>
>>
https://www.abebooks.com/first-edition/Description-Nautrigon-Directions-Use-Instrument-Solving/588224941/bd#&gid=1&pi
> d=1
> 
> Ooooh - you had more luck than I did, and that is a VERY good lead.
> 
> Obviously there's a LOT more to this device than what I got.  Now I just need a
> good picture of it, and a fairly through description of how to use it.
> I did find "On an Instrument for Solving Spherical Triangles". but it would be
> more comprehensible with a diagram to accompany it.
> 
> THANKS!  :)
> 
> - BW
> 
> 
> 
After taking another closer look at the image from the link above this 
morning, I no longer believe that your device is part of a Nautrigon, 
because the Nautrigon shown in the image does not appear to have any 
circular segments covering more than 180 degrees. That was an 
interesting lead, but unfortunately, it was probably the wrong track.

However, I haven’t found any other sources on the Nautrigon, and the 
original publication is a bit too expensive for me just to satisfy my 
curiosity.

Best regards
Michael

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