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      Knowledge is Power

      Scientific American July 17, 1909

      A New Electric Traveling Scale Crane

      • By Walter Bailey on July 17, 1909

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      More in the July 17, 1909 issue of Scientific American
      • An English Electrically Operated Evaporative Condenser Plant
      • Handy Man's Workshop
      • Quick Means for Finding the Center of Shafts
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