Maybe 0.762 to0.61metres
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.
Lochaber Narrow Gauge Railway was created in 1925.
Lochaber Narrow Gauge Railway ended in 1977.
North Wales Narrow Gauge Railways was created in 1877.
North Wales Narrow Gauge Railways ended in 1922.
Nevada County Narrow Gauge Railroad was created in 1874.
Nevada County Narrow Gauge Railroad ended in 1943.
Miami Valley Narrow Gauge Railway was created in 1874.
Miami Valley Narrow Gauge Railway ended in 1876.
Narrow Gauge Railway Museum in Sochaczew was created in 1984.
A2 width means a double narrow. A is a regular narrow A2 is double narrow and A3 is triple narrow. These are also just referred to as A, double A or triple A.