Under the Whyte notation system, a steam locomotive that has two leading wheels, six coupled driving wheels, and two trailing wheels.

(rail transport) Under the Whyte notation system, a steam locomotive that has two leading wheels, six coupled driving wheels, and four trailing wheels.

Under the Whyte notation system, a steam locomotive that has a pair of leading wheels followed by six driving wheels, with no trailing wheels.

Under the Whyte notation system, a steam locomotive that has two leading wheels, six coupled driving wheels, and six trailing wheels.

plural of 2-6-4

plural of 2-6-2

plural of 2-6-6

plural of 2-6-0

Under the Whyte notation system, a Mallet-type locomotive with two leading wheels on a leading truck, two sets of six driving wheels, and two trailing wheels on a trailing truck.

Under the Whyte notation system, a Mallet-type locomotive with two leading wheels on a leading truck, two sets of six driving wheels, and four trailing wheels on a trailing truck.