A seismogragh and/or seismometer.
An earthquakes intensity
intensity
Seismometer
A seismograph is an instrument used to record vibrations in or on a planet.
An earthquakes intensity
Yes it does. The Richter Scale measures intensity for earthquakes!!
to measure what is the intensity of the earthquake.From :Lyssa
The strainmeter, by which its seismometer component detects the vibrations or shock waves that its seismograph records, is the scientific instrument that's used to predict and measure earthquakes.
Richter scale is used to measure earthquakes magnitude Shake intensity is measured on the Mercalli scale
A seismometer is used to measure the strength of earthquakes.
Seismometer
It depends on what substance/object you are trying to determine the intensity.