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    Re: Instrument for HA, Lat ... of points on the Sumner line may be directly obs at sea
    From: Dave Walden
    Date: 2009 Oct 6, 08:23 -0700

    Sorry.  Both links work for me.  May depend on location.  First link was a 
    short note from the Reno meeting of the Astro Soc Pacific, June 1927, 
    describing the instrument.  All necessary details are in the Patent.
    
    
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