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- noun Plural form of
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Instruments -- infrared sensors, neutrino detectors, magnetometers, gravitometers, atmosphere sniffers, a hundred kinds of robot bloodhound -- would expose the place at once.
A Knight of Ghosts and Shadows Anderson, Poul, 1926- 1974
They make excellent seismometers and could also be used to image underground structures, much as geophysicists do today with gravitometers.
Ars Technica Chris Lee 2011