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 ]
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 . 2012