J).—2

Class "Ab," Simple Superheated Tender Engine, 4-8-2, "Pacific Type." Built in New Zealand Government Railway Workshops. Diameter of coupled wheels, 4ft. 6in.; cylinders, 17in. by 26in.; working-pressure, 180lb. per square inch; water capacity, 3,500 gallons; tractive power, 20,000 lb.; weight in working-trim, 79 tons. Designed to run on all lines.