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Slide Rule, Slipstick

Slide Rule.  I loved working with it.  Ah...engineering math, ever so useful in my life!!!

Slide Rule. I loved working with it. Ah...engineering math, ever so useful in my life!!!

Illustrated Self-Guided Course on How to Use the Slide Rule | International Slide Rule Museum

Illustrated Self-Guided Course on How to Use the Slide Rule | International Slide Rule Museum

Vintage Swank Working Slide Rule Tie Bar Mid Century by TwinklingStarVintage

Swank Working Slide Rule Tie Bar Mid Century Vintage Engineer Techie Tie Clip in Original Box with Directions

Mr. President, I'm not saying we won't get our hair mussed. I do say,... - but does it float

Mr. President, I'm not saying we won't get our hair mussed. I do say,... - but does it float

Before electronic calculators, complex calculations were made using a slide rule.  This “National” model 1767 slide rule, produced by Dietzgen Co. 1955-1959, was owned by Dr. Julius Axelrod at NIMH who won a Nobel Prize in 1970.

Before electronic calculators, complex calculations were made using a slide rule. This “National” model 1767 slide rule, produced by Dietzgen Co. 1955-1959, was owned by Dr. Julius Axelrod at NIMH who won a Nobel Prize in 1970.

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