Designing a Seismograph

Task: Make a seismograph that detects the Earths movement
Materials: wire, shoebox, washers, string, masking tape, maker, paper.
Original Construction: We made the base of the seismograph out of a box and cut a hole at the top. Through the hole we put the pencil and lots of washer to keep it stable.
Trials with the original construction: the original construction didn't work out because the pencil moved to much and couldn't record.
Modification 1# We added one set of wires to stabilize the pencil.
Trials with Modification 1# The pencil continued to move and the results weren't good we couldn't record anything.
Modification 2# We added a second set of wires lower so it stabilizes the pencil.
Trials with Modification 2# We had a couple trials here and they were all successful the seismograph worked.
Observations:
I noticed that for the seismograph to work we need to make the pencil stationary
I also Noticed that in order for the seismograph to work you need to move the desk in a specific order.
Conclusion: I conclude that Seismographs a really important to scientists. It helps them to measure the magnitude of an earthquake. We can measure when seismic waves start arriving, Scientists can warn people a couple minutes before the earthquakes climax so they get to safety. We can see the magnitude and damage using a seismograph.
Further Inquiry: Does the distance of the seismic waves or the focus affect the readings of the seismograph.