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单词 Waywiser
释义

Waywiser

英语百科

Surveyor's wheel

Surveyor's wheel
An early surveyors wheel depicted in the hand of late 18th century British road builder John Metcalf.
A diagram of a surveyor's wheel taking a measurement.

A surveyor's wheel, also called a clickwheel, hodometer, waywiser, trundle wheel, measuring wheel or perambulator is a device for measuring distance.

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