A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Troughton device c.1800
From: David C
Date: 2023 Sep 16, 00:51 -0700
After further thought the curved plate may represent the arc of a sextant. The object is a test piece to determine the accuracy of a sextant mechanism and vernier.
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