The measurement of magnetic fields (strength and direction etc)(noun)
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Use "magnetometry" in a sentence
"In the Potters 'Quarter magnetograms and radargrams are complementary to one another in the way that magnetometry produces a much better visibility for kilns, whereas architectural remains are clearer on radargrams."
"While magnetometry had produced a plan with some rooms, the GPR scan produced much more detailed plan views at certain depths."
"Map of the area east of the theater produced by magnetometry in 2002."