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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Computing Instrument
From: UNK
Date: 2010 Feb 4, 00:39 -0800
From: UNK
Date: 2010 Feb 4, 00:39 -0800
That looks like a Hagner Position Finder (US Patent 2,064,062),
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