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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Mercury artificial horizons
From: Paul Hirose
Date: 2013 Dec 31, 16:51 -0800
From: Paul Hirose
Date: 2013 Dec 31, 16:51 -0800
In his 1901 book the famous instrument maker William Stanley warned of the hazard of mercury - to sextants. "The smallest particle, if it touches the frame, will eat into the brass and destroy its strength." http://books.google.com/books?id=QzM7AAAAMAAJ&jtp=400 Several types of artificial horizon are described later in that chapter. --
