ruling grade

noun

ruling grade

noun

1

Rail transport, Railways, Transport Synonym of ruling gradient.

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

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.