SEISMOGRAPH, VIBRATION MONITOR, ANALYZER AND ELECTRONIC DISPLAY INSTRUMENTS FOR STRUCTURES SUCH AS BUILDINGS; VIBRATION SENSORS, RECORDERS OF VIBRATIONS IN STRUCTURES CAUSED BY EXPLOSIVE BLASTS, COMPUTER PROGRAMS FOR ANALYSIS AND DISPLAY OF BLAST-RELATED SIGNALS; BLAST SENSORS, BLAST TRIGGERS, SIGNAL AMPLIFIERS, PROBES FOR MEASURING DETONATION VELOCITY AND EXPLOSIVES, MANUALS SOLD WITH AFORESTATED PRODUCTS, POWER SUPPLIES, PRINTERS, PLOTTERS AND PARTS THEREOF