Nilgiri Mountain Railway X 37385 metre gauge Abt system cogwheel locomotive built 1920 by SLM Winterthur. 17 locomotives of this type were built 1914 to 1952 by SLM, most are still in service on the Nilgiri Mountain Railway (only rack railway in India). In 2011 four new locomotives were built according to the same basic design, but oil-fired with newer components. National Railway Museum New Delhi 2012-12-07.

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