Mercalli scale

noun
Mer·​cal·​li scale | \mer-ˈkä-lē-, (ˌ)mər-\

Definition of Mercalli scale 

: a scale of earthquake intensity ranging from I for an earthquake detected only by seismographs to XII for one causing total destruction of all buildings

First Known Use of Mercalli scale

1921, in the meaning defined above

History and Etymology for Mercalli scale

Giuseppe Mercalli †1914 Italian priest and geologist

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The first known use of Mercalli scale was in 1921

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