Seismograph vs. Seismoscope — What's the Difference?

An instrument for automatically detecting and recording the intensity, direction, and duration of a movement of the ground, especially of an earthquake.

An instrument that indicates the occurrence or time of occurrence of an earthquake.

An instrument that automatically detects and records the intensity, direction and duration of earthquakes and similar events.

An instrument that indicates the occurrence of an earthquake.

An apparatus for registering the shocks and undulatory motions of earthquakes.

A seismometer.

A measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)