tachymeter

noun ta·chym·e·ter \ taˈkimətə(r) , təˈk- \

Definition of tachymeter

1 :an instrument for determining quickly the distances, bearings, and elevations of distant objects in surveying; especially :a transit or theodolite with stadia hairs
2 :a speed indicator

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Origin and Etymology of tachymeter

International Scientific Vocabulary tachy- + -meter


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