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    Re: Dennert & Pape MHR-1 Dennert & Pape MHR-1 HR-2 Cylindrical Slide LineRuler
    From: Ronald van Riet
    Date: 2013 Jan 23, 01:14 -0800

    anyone wanting to find out more about these, please see my article on Bygraves and HR1/MHR1 at https://sites.google.com/site/sliderulesite/position-line-slide-rules

    I know the treatment of celestial navigation is not perfect, but this article was meant to make the subject somewhat understandable for slide rule enthusiasts, not advanced navigators ;-)

    If you like to have your HR1/MHR1 (or Bygrave!) included in the list of known survivors, just drop me an e-mail and it will be in the next iteration of the article.

    Have fun reading it!

    Ronald van Riet
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