Sentence Examples with the word seismograph

The Strassburg or Bosch seismograph differs from those just described in resembling the Milne instrument, it is a horizontal and not a vertical pendulum.

Earthquakes (not of a violent character within recent centuries, though the ruin of the Colosseum is probably to be ascribed to this cause) are not unknown even at the present day in Rome and in the Alban Hills, and a seismograph has been established at Rocca di Papa.