Under the Whyte notation system, a steam locomotive that has two leading wheels arranged in a leading truck, four coupled driving wheels and two trailing wheels in a trailing truck.
Under the Whyte notation for the classification of steam locomotives, 2-4-2 represents the wheel arrangement of two leading wheels on one axle, four powered and coupled driving wheels on two axles, and two trailing wheels on one axle. The type is sometimes named "Columbia" after an early locomotive of 2-4-2 arrangement.
The numerical value of 2-4-2 in Chaldean Numerology is: 0
The numerical value of 2-4-2 in Pythagorean Numerology is: 0
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