The Java(TM) Applet above is a realtime seismograph.  The horizontal scale is fixed at 10 seconds per tick, providing for the display of up to 6 minutes of past seismic activity.  The vertical scale is adjustable to 10, 50, 100, and 200 millivolts per division, with ranges of +/-0.1V, +/-0.5V, +/-1.0V, and +/-2.0V respectively.  The 200 mV/div. setting should more than cover the full range of the attached seismometer, while the 100 mV/div. setting should be adequate for any situation other than a major earthquake.  The 50 and 10 mV/div. settings are provided for magnification.

NOTE:  The labels may be chopped off, due to funky Java text stuff that I don't entirely understand yet.

ANOTHER NOTE:  Due to the nature of the seismometer hardware, the electronic signal may drift over time. And due to the nature of Geology professors, said device may not get recalibrated for a while. So don't be suprised if the squiggly line is riding a bit off center; that doesn't mean that the Earth has shifted in it's orbit.