Thomas Instruments manufactuers seismographs, lightning detectors, blasting meters, and vibration sensing equipment.

VMS-2000 Series DM-100 Series Blaster Electronics Documentation Software VMS-2000, VMS-200E, DM-100, Blaster Electronics, Documentation Software, seismography, seismograph, vibration monitor, measurment instruments, drilling, blasting, drill monitor, lightning detection, galvanometers, seismographs, sirens, ohmmeters, blasting, blasting devices