Try Our Apps
Dictionary.com

follow Dictionary.com

What is the origin of "February"?

parallel rulers

plural noun
1.
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, especially for transferring the bearing of a plotted course to a compass rose.
Origin of parallel rulers
1695-1705
1695-1705
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
Cite This Source
Examples from the Web for parallel-rulers
Historical Examples
  • Hence we find him first making brass scales, parallel-rulers and quadrants.

    James Watt Andrew Carnegie

Word of the Day

Difficulty index for parallel rulers

Few English speakers likely know this word

Word Value for parallel

10
14
Scrabble Words With Friends

Nearby words for parallel-rulers