ruling grade

English

Noun

ruling grade (plural ruling grades)

  1. (rail transport) Synonym of ruling gradient.
    • 1959, Steam's Finest Hour, edited by David P. Morgan, Kalmbach Publishing Co. (photo caption):
      Homemade No. 6187 climbs the .51 per cent ruling grade west from Fort Wayne, Ind., with 68 cars behind her tender.
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