hodometer
行程表,路程表,迴轉表
ho·dom·e·ter n. A device for measuring the length of a path, consisting of a wheel of known circumference attached to a rod held in the hand, and pushed along a surface, which is usually the ground or a floor. The number of times the wheel makes a complete circle multiplied by the circumference is a measure of the length of the path traversed. It may be used to measure distances on curved as well as straight paths. A variant which registers the miles and rods traversed is sometimes used by surveyors.
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hodometer
n : a meter that shows mileage traversed [syn: odometer, mileometer,
milometer]