A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David C
Date: 2020 Aug 16, 14:32 -0700
I note that the check was made in 1977. What year diid the Admiralty stop testing sextants? And why the Admiralty Compass Observatory?
Maybe I am reading the graph incorrectly but a 6' error at 60° seems massive for a precision instrument. Had the sextant been dropped?