Queensland 4D11½ Abt class locomotive

The Queensland Railways 4D11½ Abt class locomotive was a class of 0-4-2RT steam locomotives operated by the Queensland Railways.
== History ==
In October 1898, two Dübs & Co locomotives entered service. Per Queensland Railway's classification system they were designated the 4D11½ Abt class, the 4 representing the number of driving wheels, the D that it was a tank locomotive, and the 11½ the cylinder diameter in inches.
They were built to assist conventional locomotives up and down a steeply graded rack railway section of the Central Western line at Mount Morgan.
== Class list ==
Number	Works
number	In service 	Condemned
339 	3619	October 1898	September 1916
340 	3620	October 1898	December 1922
== Gallery ==