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Gragraph home seismometer

Earthquake measure device with memory, Clock and Calender

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The Gragraph is a home seismograph that warns you as an earthquake is occurring, measures the intensity, and records the data in its calendar. The verbal warnings are in Japanese, but the digital data can be easily accessed in any language. In normal mode, the Gragraph serves as a tabletop calendar/clock and a reference for past activity.

Gragraph home seismometer


Gragraph features:

  • Perceives shaking, and indicates on display
  • Warns of shaking with sound and voice
  • Indicates level from 3-10
  • Keeps record of previous seismic activity
  • During the night, it activates a safety light
  • Calendar/Clock function


    Gragraph specifications:

  • Size: 144x130x127mm (4.7”x5.1”x5”)
  • Weight (w/o battery): 330g (11.6 oz.)
  • Color: grey, pink, yellow, blue
  • Time precision: 30 seconds +/- per month
  • Timer (30 min.)
  • Temperature range: -10° + 40°
  • Audio player adapter
  • Batteries: 4 x AA (not incl.)
  • Instructions: English

    Gragraph home seismometer



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