ALT: Pumpkin Smash

The Guralp CMG 3T/T30 120sec 50hz Broadband Sensor Seismometer Seismic Monitor is a high-quality data acquisition device designed for seismic monitoring and analysis. With its reliable brand reputation and advanced features, this seismometer provides accurate and reliable data for testing, measurement, and inspection purposes in various industrial and business settings. Its broadband sensor capabilities allow for the detection of seismic activity over a wide range of frequencies, making it an essential tool for monitoring and understanding movements of the earth's crust. Used untested machines make offer if you are a student teacher school or college ask me about discounts I can combine shipping for more than one but it’s not much save $9 per

ALT: Senator Balancing Book in Senate

Home DIY seismograph: 4.5 Hz geophone flattened to 0.31 Hz, ADS1220, Raspberry Pi. Build doc, parts, tests, capture and client software. - rankinstudio/DIY-SEISMO

Center for Land Surface Hazards (CLaSH)