A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Andrew Nikitin
Date: 2019 Oct 10, 15:42 -0700
>I believe that's the extended version of Weir's azimuth diagram
Frank, thank you very much, this is exactly it. I saw this name a few times, but somehow missed the picture.
Now, just searching the forum for Weir diagram will get me enough reading material.