Slide Rule

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My Grandpa George’s slide rule, which I am sure he used in his machinist schooling at the star

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My Grandpa George’s slide rule, which I am sure he used in his machinist schooling at the star

Link #history #vintage #slide rule #vintage slide rule #antique #chicago #ephemera #family ephemera

Patent Model for Circular Slide Rule Invented by John W. Nystrom This is the patent model for Nystr

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#Tomboy  #Taming a Tomboy  #Calculus  #Professor  #Slide Rule  #Spanking  #Magazine Cover  #National

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Tallymaster Home Adding Machine - beats my abacus

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Studying at Howard University(Alfred Eisenstaedt. 1946)

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There’s nothing wrong with being classically trained. Top to bottom: Pickett N3, 500, 902, and 200T

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libraryplankton:The Slide Rule Handbook /Dr. J. O. Perrine.Published:  Gordon and Breach , 1965.

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My father’s rule.

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