A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Dave Walden
Date: 2019 Mar 3, 07:21 -0800
Attached is a start on excel.
The link is my attempt at circular scales for a different but similar project.
I had to resort to postscript to get decent results. I did the same for Gary for the scales he uses on the flat Bygrave.