NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Antoine Couëtte
Date: 2012 Apr 5, 22:21 -0700
Bill,
Again, the idea and implementation of a dip-meter such as the one you described are excellent.
Maybe a small hint now, though : for any "operational and meaningful" use, it might be good practice to record dip values under various azimuts, say 3 observations spaced within 60° in Azimuth if achievable/practicable, to check that dip remains fairly constant regardless of Azimuth.
In some areas, Red Sea to name of one these, at sea dip values are known - or at least (quite) strongly suspected - to be (highly) azimuth dependent especially by sunrise and sunset.
Kermit
Antoine M. "Kermit" Couëtte
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