METRE Gauge, Narrow gauge and Standard gauge.Broad gauge:It is often called as a WIDE gauge.The distance between the two tracks in these railway gauges or the WIDTH of the broad gauge used in INDIAN railway track is 1676 MM.Standard gauge:The width of the standard gauge used in the Indian railway track is 1435 mm.Metre Gauge:The width of the Metre gauge used in the Indian railway track is 1000 mm.Narrow Gauge:It is often called a small gauge. The width of the narrow gauge used in the Indian railway track is 762 mm and 610 mm.