PARALLEL RULERS


Meaning of PARALLEL RULERS in English

a pair of straightedges connected by two pivoted crosspieces of equal length so as to be parallel at all times, used for various navigational purposes, esp. for transferring the bearing of a plotted course to a compass rose.

[ 1695-1705 ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .