The distance between the two tracks. There are many different gauges around the world.
5 inch gauge is garden railway but 3.5 inch gauge is the smallest elevated gauge for a railway http://www.rideonrailways.co.uk/
Lochaber Narrow Gauge Railway was created in 1925.
Lochaber Narrow Gauge Railway ended in 1977.
The standard gauge railway line allows for increased capacity for standard gauge railway line through the addition of an extra track on the current line.
Narrow Gauge Railway Museum in Sochaczew was created in 1984.
Miami Valley Narrow Gauge Railway was created in 1874.
Miami Valley Narrow Gauge Railway ended in 1876.
Broad gauge railway track is appproximately 5-foot 6 meters wide
A narrow gauge railway has numerous advantages. Narrow gauge railways usually are less expensive than broader gauge railways. Narrow gauge railways can be used in mountainous terrains. They can also be used as temporary railways.
Peru
1.62 mt.
Maybe 0.762 to0.61metres