. . . . . . "The standard gauge (also named the Stephenson gauge after George Stephenson) is a widely-used rail gauge. Approximately 60% of the world's existing railway lines are built to this gauge (see the list of countries that use the standard gauge). The distance between the inside edges of the rails of standard gauge track is 1,435 mm (4 ft 8\u00BD in)."@en . . "Standard gauge railroad track is 4 feet, 8 and 1/2 inches (or 56.5 inches) measured between the insides of the rail. Any gauge less than this is considered narrow gauge."@en . . . . . . . . . . . "The standard gauge (also named the Stephenson gauge after George Stephenson) is a widely-used rail gauge. Approximately 60% of the world's existing railway lines are built to this gauge (see the list of countries that use the standard gauge). The distance between the inside edges of the rails of standard gauge track is 1,435 mm (4 ft 8\u00BD in)."@en . . "Standard gauge railroad track is 4 feet, 8 and 1/2 inches (or 56.5 inches) measured between the insides of the rail. Any gauge less than this is considered narrow gauge."@en . "Standard gauge"@en .