a T-shaped ruler, used primarily in mechanical drawing, having a short crosspiece that slides along the edge of the drawing board as a guide to the perpendicular longer section in making parallel lines, right angles, etc., and as a support for triangles.
🦖T-Rex - Emoji by Dictionary.comRead more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of T square
First recorded in 1775–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019