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    Re: recommendation for slide rule ?
    From: Michael Dorl
    Date: 2011 Nov 23, 14:41 -0600

    On 11/23/2011 1:57 PM, Patrick Goold wrote:
    > ThinkGeek Sliderules.  New.  $10.   Google it!
    
    Sounds like a deal if you don't need the missing scales.  Also no
    mention of materials used.  See comments at
    
    
    http://www.thinkgeek.com/geektoys/science/be12/?itm=thinkgeek_slide_rule&rkgid=276375949&cpg=ogty1&source=google_toys&gclid=CI2s593JzawCFQIDQAodYRXKqg
    
    Being an engineering student in the late 50s I did many calculation with
    a slide rule.  If you needed more accuracy, you used log tables or if
    you were really fortunate a Monroe or Merchant calculator.  The
    surveying course was a real bear because you had to use logs.  One
    problem with a slide rule is figuring out where the decimal point goes;
    I was pretty good at doing that by guess and by golly but my room mate
    had some algorithm that involved the number of digits in the
    multiplicands and which end of the slide rule the center slider was
    sticking out of.
    
    I remember my high school trig class had about a ten foot long slide
    rule hanging above the chalkboard that the instructor used to teach us
    how to use the thing.
    
    And then there were the circular slide rules....
    
    http://compare.ebay.com/like/170733386474
    
    If anyone wants a Post Versalog, let me know.
    
    
    
    
    

       
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