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    Re: Interesting ebay find: Plath suncompass - ciraWWII
    From: Dan M
    Date: 2014 Sep 25, 09:44 -0700

    Very interesting video.  Question:  Is the heading in the aircraft showing magnetic?  The Astro compass bearing is true..... not magnetic, so is he converting the true to magnetic?  I would have thought the heading in the aircraft is true as well and hence no need for TVMD (+W) conversions....??

       
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