
Exact field testing was not performed because a full seismic test setup, geophones, and related accessories were not available. Cosmetic wear, scuffs, age marks, and normal signs of field use are present, as shown in the photos. Main Bison 9048 unit exactly as shown in the photos. Good fit for searches such as.
Bison Instruments 9048, Series 9000, DIFP seismograph, signal stacking seismograph, geophysical equipment, seismic refraction, seismic reflection, geophone recorder, geology survey equipment, engineering geophysics, groundwater survey equipment, vintage test instrument. This Bison 9048 powers up and shows display activity.