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    Re: U-boat Celestial Navigation WWII
    From: David Pike
    Date: 2016 Jan 14, 16:36 -0800

    Gary LaPook wrote:  I am attaching some photos of the HR-2 celestial navigation computer that i took in London in 2009. This version of the slide rule is about 15 inches long and 6 inches in diameter and was to be mounted on a desk. And see:  http://fer3.com/arc/m2.aspx/Manufacture-Bygraves-LaPook-aug-2009-g9556  gl

    Gary.  I’ll be visiting London a number of times this year.  Please tell us which of the Bygrave and the MR2 cylindrical position slide rules you saw where, the Science Museum, Greenwich, or somewhere else. DaveP

       
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