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    Re: slide rule sight reduction accuracy
    From: Hein Bodahl
    Date: 2009 Aug 13, 12:40 +0200

    On 19.06.2009 12:50, Gary LaPook wrote:
    > Here is the form I had meant to send. This uses my notation of "W"
    > instead of Bygrave's "y" on the previous form.
    > gl
    If it could be of use.
    I have attached a compiled workform based on the one from Geoffrey
    Kolbe's "Long Term Almanac" to calculate declination and LHA, and yours
    to work out the Hc and Zn from the flat Bygrave.
    I got it to fit on one page with some space to scribble. I have
    laminated it and use a whiteboard pen to fill it in. Using matte
    lamination you could probably use a soft pencil.
    The colors match the colors I have added to the headers from the tables
    I have scanned from the "Long Term Almanac" (not attached, get it
    yourselves :-) ). The whole set including the Bygrave fit on 9 sheets.
    (I have made sure it is ok with mr. Kolbe to post the workform as it is
    partly copied from the "Long Term Almanac".)
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