Seismograph part
1971.0303.001
Box, control
1971.0303.002
Key
1971.0303.003
Seismograph part
1971.0303.004
Seismograph part
1971.0303.005
Paper, recording
1971.0303.006
1971.0303.001
1971.0303.002
1971.0303.003
1971.0303.004
1971.0303.005
1971.0303.006