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    Re: An azimuth nomogram: what's under the hood?
    From: Tony Oz
    Date: 2018 Mar 13, 09:37 -0700

    Robin, you recommended

    Have a look at https://www.youtube.com/watch?v=eLR3zKxpcso or google "parabola for multiplying numbers",

    Thanks a lot! I just realised I must go again to the elementary school!

    Now I'm puzzled even more - I need to clearly understand the piece about the slopes of the lines there... Working on it.

    Warm regards,

    Tony

       
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