odometer

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odometer

(ōdŏm`ĭtər), instrument provided in an automotive vehicle to indicate the total number of miles that have been traveled. The odometer generally shares a housing with the vehicle's speedometerspeedometer,
instrument that indicates speed. A cable from an automotive speedometer is attached to the rear of the transmission of an automobile; the cable turns at a rate proportional to the speed of the car.
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 and is driven by a cable that the two share. When the vehicle is in motion, this cable moves a series of gears in the odometer, turning a set of numbered drums that count the miles traveled. Some odometers, called trip meters, are manually resettable to zero; these are used to measure the lengths of individual trips. Odometers are often equipped with means for indicating if they have been tampered with, i.e., set back to make it appear that a vehicle has traveled fewer miles than it actually has. An instrument similar in design and function to the automotive odometer may be fitted to a bicycle.

odometer

[ō′däm·əd·ər]
(engineering)
An instrument for measuring distance traversed, as of a vehicle.
The indicating gage of such an instrument.
A wheel pulled by surveyors to measure distance traveled.

odometer

US and Canadian a device that records the number of miles that a bicycle or motor vehicle has travelled