NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Bruce J. Pennino
Date: 2013 Mar 18, 13:45 -0400
Bruce
----- Original Message -----From: Randall MorrowSent: Monday, March 18, 2013 10:52 AMSubject: [NavList] Re: Level vials for mirror artificial horizons
My thanks for the Empire level suggestion. Over the weekend I did two sets of three sun sights where intercepts averaged 2nm and 1.6nm. I did side by side comparisons of 2 manufactured precision levels with bases I made myself and they averaged 0.6nm and 0.6nm for two sets of 3 sun sights. The leveling mirror base was mde from a plastic bar cutting board, brass therad inserts and carriage bolts. The total costs for the "Tru-Blu" level and the mirror base was about $40. The precision levels appear to give better results but dollar for dallar, $10 versus $50, the Empire levels are very good. If you are chasing accuracy obsessively, as I do, go with precision levels.
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