This tool consists of a geophone and convert. Seismic signals into electrical signals, then the electrical signal to be extended, and then revert the seismic again to save a graph paper, up, down, down.
this tool Includes seismic receivers and converters. Seismic signals into electrical signals. The electrical signals are amplified and then converted back. A seismic again to save paper. The graph down
This tool. Consists of geophone and converter. Seismic signals into electrical signals. Then the electrical signal is expanded and converted back. A seismic again to save paper as a graph into up and down.