NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Another "emergency navigation" sightreductionmethod
From: Francis Upchurch
Date: 2015 Jul 14, 11:56 -0700
From: Francis Upchurch
Date: 2015 Jul 14, 11:56 -0700
Bon Voyage Gary!
I would be very interested in Bygrave SR v Bygrave flat, v Hv Doniol.
Maybe sometime in the future have a look at the BN? I think you will like it for aviation! (that is what it was originally designed for!)
Very easy to make the basic prototype (2-3 hours max and virtually no cost). Should be good enough for a one- off trial. (mine is still working fine after several weeks hard use). My polycarbonate definitive version for long term sea going use, probably last forever.
Best wishes
Francis
