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Re: Instrument for HA, Lat ... of points on the Sumner line may be directly obs at sea
From: Douglas Simpson
Date: 2009 Oct 7, 13:12 +0800
From: Douglas Simpson
Date: 2009 Oct 7, 13:12 +0800
thanks for that Wolfgang
Regards
Doug
On Tue, Oct 6, 2009 at 11:23 PM, <waldendand@yahoo.com> wrote:
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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