"Bald Eagle" <cre### [at] netscapenet> wrote:
> 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

You might have a look at the link below

>>
https://www.usni.org/magazines/proceedings/1878/december/brief-account-progress-art-navigation
<<

and search for 'OTHER DEVICES'. No manual how to use that thing but a hint for
what is was designed.

Droj

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