What gauge is Standard Gauge (1435mm)?

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Multiple Choice

What gauge is Standard Gauge (1435mm)?

Explanation:
Gauge is the distance between the inner faces of the two rails. Standard Gauge is defined as 1435 millimeters, which is exactly about 4 feet 8 1/2 inches. That precise width is what makes it “standard.” The other numbers represent different gauge families: 1600 mm is broader than standard, 1000 mm is metre gauge, and 1200 mm is a narrow/near-narrow gauge. So the width that defines Standard Gauge is 1435 mm.

Gauge is the distance between the inner faces of the two rails. Standard Gauge is defined as 1435 millimeters, which is exactly about 4 feet 8 1/2 inches. That precise width is what makes it “standard.” The other numbers represent different gauge families: 1600 mm is broader than standard, 1000 mm is metre gauge, and 1200 mm is a narrow/near-narrow gauge. So the width that defines Standard Gauge is 1435 mm.

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