Original old oil and gas industry trade magazine vintage ad for SEISMOGRAPH SERVICE CORPORATION of Tulsa, OK. Vibroseis Controlled Swept Frequency Signal Means Better Seismic Records. Transmitted as a swept frequency signal from magnetic tape in the field recording unit to one or more truck mounted vibrator units operating in synchronism. This 1962 petroleum drilling equipment magazine advertisement would display beautifully matted and framed.
- SKU y150
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