WZG-24C/48C engineering seismograph is equipment from the third generation that supports the window eight systems and is multi-functioning, high-precision, and stable. Seismic source for examining is from the hammer, electric flicker, or explosion for thousand-meter depth. It applies for seismic surveys, as sheared wave velocity test, surface wave exploration, pier foundation test, ground micro-tremor determination, seismic imaging, shake measurement, refraction or reflection survey, and so on.