19

By Eneko .Riegoo
  • 3500 BCE

    Obelisk

  • 2000 BCE

    Water clock

  • 1700 BCE

    Pendulum clock

  • 1500 BCE

    Sundial

  • 70

    Candle clock

  • 1088

    Mechanical clock

  • 1300

    Sandglass

  • 1500

    Harrison timepiece

  • Digital clock

  • Atomic clock

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