A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2021 Apr 16, 08:10 -0700
Tony Oz you wrote: I'm using the third scale (counting from to left right) as the prototype for my E6-B because it better fits the Chichester's plane capabilities. My question is abouth the lower part: the square grid has the same step size as the 50 knots arc radius, is that correct?
Tony. On the upper part 10kts = 10mm. The gap below 30kts is 5mm. Each tiny square is 5mm. If you extend the 30° drift lines, you'll find they cross at 25 on the lower part, not that that matters. the length overall is 260mm. The beam is 97mm. I suppose green is easily seen under red light, unlike red, which would disappear. DaveP