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      Scientific American September 08, 1894

      An Improved Instrument for Engineers, Surveyors, Etc.

      • September 8, 1894

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      More in the September 08, 1894 issue of Scientific American
      • Index of Inventions - September 8, 1894
      • The Eastern Power Station of the Brooklyn City Railroad Company
      • An Improved Needle Threader
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