A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Samuel L
Date: 2015 Nov 26, 16:55 -0800
That's pretty remarkable. There are many equations and solutions throughout the book.
From: Noell Wilson
Date: 2015 Nov 26, 12:52 -0800
Sam, if you want non-electric, see: http://fer3.com/arc/imgx/The-Slide-Rule.pdf Page 57 which gives step by step instructions on how to use a slide rule as a traverse table.