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The Guitar Slide Rule: A Simple But Effective Tool For Measuring Guitar Strings – FuelRocks
c0nc0rdance on Twitter: "The slide rule was invented by William Oughtred of Oxford in 1622. He also dabbled in alchemy, demons, and math pedagogy, so there was a definite theme to his
Slide rule – William Oughtred Invented | InforamtionQ.com
05 March-William Oughtred - On This Day
The Slide Rule. Early forms for doing calculations. - ppt download
68/365: The Slide Rules | William Oughtred and others develo… | Flickr