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    Re: Visiting local museum and CN-items
    From: Alexandre Eremenko
    Date: 2019 Dec 18, 09:12 +0000

    I correct what I just wrote:
    Fig 3 is not a universal instrument but a small "meridian circle": it does not 
    have an azimuth ring, so it measures only altitude.
    
    Alex.
    

       
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