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    Slide rule

    Circular slide rule

    Bill Hewlett and David Packard - and a slide rule!

    Working with a slide rule

    USMA Cadets marching with slide rules, 1941

    K+E

    Another effort to render the slide rule both manly and criminal.

    1940s advertising illustration Swift Premium Meats advertisement sausage. love the slide rule next to the cut sausage.

    Surveying and Drawing Instruments slide rules ca. 1911

    Dobson Slide Rule

    USMA Cadets marching with slide rules, 1941

    Okay, technically she's an electrical engineer. But still, slide rule. #nasa

    Old Slide Rule Ad

    Slide-rule widow!

    [Employee with slide rule, Hercules Powder Co. Experiment Station, Wilmington, DE]

    Gave a two-part final exam today. With/without calculator. This dude says Ill take the non-calculator and whips out this 4 foot slide rule. Year = made. - Imgur

    Art by Frank Kelly Freas - Pirates of Ersatz by Murray Leinster, Astounding Science Fiction, February 1959

    1940s advertising illustration Swift Premium Meats

    HOT ROD Math

    K+E ad

    Instruction book

    An Easy Introduction To The Slide Rule -Isaac Asimov,1965

    K log log duplex slide rule

    Post 1460

    Pickett N-500-ES