A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Robert VanderPol II
Date: 2016 May 7, 20:35 -0700
Having researched a bit further I am wanting the 2nd edition so I can read the Sadler mods more directly. I will probably plunk down the cash in the next couple of days so I can get on with my project.
I assume by Celestial Tools are you referring to the USPS references.
FWIW, Celestial Tools includes sight reductions by the original Ageton, Ageton-Bayless (compact), and, when appropriate, the Sadler technique, all reached by clicking on the "H.O. 211" button under "SR Methods & Fix".