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    Re: Traditional navigation by slide rule
    From: David Pike
    Date: 2016 Jan 6, 12:38 -0800

    Bob Goethe sent some photos http://fer3.com/arc/m2.aspx/Traditional-navigation-slide-rule-Goethe-jan-2016-g34055

    That’s a mighty slide rule Bob. For one who only ever managed to just scrape through in higher Maths, please confirm what all the scales are.  Starting from the backside from bottom up my guesses are:
    LL2 = e superscript 0.1x

    LL3 = e superscript x
    C&D = x
    C1 = 1/x
    C1F = just a guess 1/pi x
    CF = just a guess pi x
    LL1 = just a guess e superscript 0.01x

    L = log base10 x

    Front side from bottom up
    Sh1 = just a guess sinh-1 some scale on there? Small angles
    Sh2 = just a guess sinh-1 some scale on there? Larger angles

    Th = just a guess tanh-1 some scale on there?
    D = x
    S = sin-1 x
    ST = sin-1 x or Tan-1 x Very small angles
    T = tan-1 x
    A&B = x squared

    LL00 = very much a guess e superscript 0.000x
    LL0 = very much a guess e superscript 0.00x

    Many thanks.  DaveP

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