Wheeltapper

A wheeltapper is a railway worker employed to check the integrity of train wheels and that axle boxes are not overheating.

Typically employed at large railway stations and in goods yards, they tap wheels with a long-handled hammer and listen to the sound made to determine the integrity of the wheel; cracked wheels, like cracked bells, do not sound the same as their intact counterparts (they do not "ring true").

单词	Wheeltapper
释义	Wheeltapper 英语百科 Wheeltapper A wheeltapper is a railway worker employed to check the integrity of train wheels and that axle boxes are not overheating. Typically employed at large railway stations and in goods yards, they tap wheels with a long-handled hammer and listen to the sound made to determine the integrity of the wheel; cracked wheels, like cracked bells, do not sound the same as their intact counterparts (they do not "ring true").
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