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  1. #21
    Join Date
    Jul 2005
    Posts
    12177
    Quote Originally Posted by lakeside
    well you must have some time on your hands to even want to lean that type of math but if your going to spend $37 on a book why not make it real Interesting and put the pocket calculator away and dust off the slide rule
    Slide rules are only good for 3 significant figures (if your eyesight is really good) and he is working into the fourth decimal; get out the log tables.

  2. #22
    Join Date
    Apr 2005
    Posts
    460
    Your showing your age if you know what a slide rule is but watch your calculator and see howmany places it caries the decimal . There are other book's a high school text book The cnc workshop by Nanfara, Uccello, Murphy Is also a good starting place By the way Geof and Lakeside Don't forget We put Men on the moon with slide rule's Flew airplanes at Mac 3plus not to mention 85000+ feet just for starter's Kevin Taylor

  3. #23
    Join Date
    Jul 2005
    Posts
    12177
    [QUOTE=Kevin Taylor]Your showing your age if you know what a slide rule is............... /QUOTE]

    Yeah, I know. In 1967 I paid $36 for a Keuffel and Esser slide rule that I still have. The problem is now I need a magnifying glass to use it.

  4. #24
    Join Date
    Feb 2006
    Posts
    313
    I think 2_jammer is to be commended for being willing to make the effort to understand the stuff instead of settling for being a civilised savage (my term for the kind of people who turn on the tv and seem to assume it works because they have good karma or because the world by god owes it to them ).

    Besides, a DIYer can never know too much... or else they ain't really DIYing (imo), they're just "doing somebody else's".


    Tiger

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