| 31. | The important thing here is to be patient and keep working a slide rule.
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| 32. | I called several places, but they did not know what a slide rule was.
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| 33. | Artillerymen in Iraq don't use slide rules as their counterparts on Iwo Jima did.
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| 34. | Q : I heard something about a slide rule saving Apollo 13 from disaster.
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| 35. | In the 1920s, K & E started manufacturing slide rules.
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| 36. | Q : I saw something about a slide rule saving Apollo 13 from disaster.
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| 37. | :I think historically, nobody did serious calculations with slide rules.
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| 38. | Put a bunch of mechanical pencils and a slide rule in your shirt pocket.
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| 39. | How would you factor " coeds with slide rules " into a mathematical simulation?
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| 40. | In the age of slide rules, it took days to calculate a structural scheme.
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