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

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