A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Greg Rudzinski
Date: 2014 Jun 12, 17:37 -0700
In place of trig tables would lines on a page graduated like a trig slide rule obtain 4 place precision for cos sin and havsin. Figure 6" lines x 30 for 15 foot of rule per page face. In a way like Gary's flat Bygrave but not transparent. Perhaps Gary could make a proto transparency to function as a 4 place multipication slide rule. Precision on the cheap.