Measure, at 14 mm below the rolling plane, the distance that exists between the inner edges of the upper part (mushroom) of the rails of a track. The standard gauge is 1.435 m, except for some specific tolerances
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Measure, at 14 mm below the rolling plane, the distance that exists between the inner edges of the upper part (mushroom) of the rails of a track. The standard gauge is 1.435 m, except for some specific tolerances
Link... for your business