Tachymeter may refer to:
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Tachymeter (survey)
Tacheometry (; from Greek for "quick measure") is a system of rapid surveying, by which the horizontal and vertical positions of points on the earth's surface relative to one another are determined without using a chain or tape, or a separate l ...
or tacheometer, a type of theodolite used for rapid measurements of distance
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Tachymeter (watch)
A tachymeter (pronounced ) is a scale sometimes inscribed around the rim of an analog watch with a chronograph. It can be used to conveniently compute the frequency in hours of an event of a known second-defined period, such as speed (distance o ...
, a scale sometimes inscribed around the rim of an analogue watch
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