Two-men-independently-developed-the-octant-around -- Multiple sentences match

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Two men independently developed the octant around 1730: John Hadley ( 1682 – 1744 ), an English mathematician, and Thomas Godfrey ( 1704 – 1749 ), a glazier in Philadelphia.

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Two men independently developed the octant around 1730: John Hadley ( 1682 – 1744 ), an English mathematician, and Thomas Godfrey ( 1704 – 1749 ), a glazier in Philadelphia.

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