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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Instrument for solving spherical triangles
From: G Becker
Date: 2012 Apr 25, 12:29 -0700
From: G Becker
Date: 2012 Apr 25, 12:29 -0700
Interesting instrument sold at Christies.
https://www.christies.com/lotfinder/lot/an-instrument-for-solving-spherical-triangles-casella-5548772-details.aspx?from=searchresults&intObjectID=5548772&sid=541ab9de-ab20-4070-a282-96a70ce878b5
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