A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2018 May 8, 09:28 -0700
Tony you wrote:
Were there any aircraft sextants with mercury-filled vials for artificial horizon?
If there were not - why?
No doubt such a system could be arranged with a suitable system of mirrors, but generally there’s a requirement for light to pass through the bubble chamber or vial, and mercury of course is opaque. DaveP