seismometer, hydrophone, seismological, geodetic, radiometer, electroencephalograph, trembler, denali fault, seismicity, geophone, richter scale, voltmeter, sonde, earthquakes, acoustic impedance, stratovolcano, bathymetry, thermometer, inclinometer, tremors, spectrogram, quakes, magnetometer, geomagnetism, doppler effect, seismologic, spectrometer, dipole moment, deimos, manometer, spectroscope, observatory, theodolite, polarimeter, lidar, tuning fork, gamma ray, mercalli scale, logarithmic scale, echo sounder, spectrographic, radiosonde, seiche, geophysics, buoys, doppler, geologists, heinrich hertz, scintillometer, aftershock, millibar, astrometry, earth tremor, compressional, phonautograph, sonification, rumbler, spectrographic analysis, electrocardiogram, dosimeter, transect, telescope, paleoclimatology, armillary sphere, sundial, anemometer, stalagmite, pyrometer, volcanology, pinhole camera, vibrations, radial velocity, birdcall, electroacoustic, foreshock, microelectrode, cirrus cloud, tomography, stereopticon, interferometer, vibrating, eratosthenes, centroid, squiggles, spectroscopic analysis, photometer, pulse, pulsations, measurements, minos, fluorometer, attosecond, kinetoscope, volcanoes, crustal, mass spectrometer, azimuthal, fractals, geological, auroral, electroencephalogram, tectonic, galvanometer, seismographs, barometer, machine, dynamometer, micrometer, cooker, integrator, pendulum, accelerometer, changer, gyroscope, interconnect, manometers, meter, microscope

spike

measuring instrument, measuring system