Middle ordinate

Middle ordinate

The distance measured from gauge line of rail on a curve to the middle of a string drawn taut and held to contact with gauge line of rail at its ends. The middle ordinate forms a convenient means of measuring detailed curvature and is used in the adjustment of curves and the investigation of accidents. It is also a factor in bending rails to a desired curvature.

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Part of Speech: noun
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Industry/Domain: Railways
Category: Railroad
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