1) Railway occupation
Found on
https://www.crosswordclues.com/clue/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...
Found on
http://en.wikipedia.org/wiki/Wheeltapper
No exact match found.
