| 41. | The invention of the slide rule involved Oughtred in a priority dispute with Delamain.
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| 42. | Thanks to the advent of the calculator, slide rules have lately disappeared from university bookstores.
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| 43. | Among the keepsakes will be Rutan's college slide rule.
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| 44. | The site, which features thousands of slide rules for sale, is no Amazon . com.
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| 45. | Daly averaged nearly 289 . You don't need a slide rule to figure it out.
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| 46. | The eighth, the vice president ( VP ) of engineering, spotted a small slide rule.
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| 47. | The designer didn't sit there with a slide rule.
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| 48. | In their youth they were whiz kids who carried slide rules and memorized trig tables.
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| 49. | In 1960, he served as president of the Slide Rule Club at Medford High School.
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| 50. | :: : Check the batteries in your slide rule.
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