T square


Also found in: Thesaurus, Encyclopedia, Wikipedia.

T square


n.
a T-shaped ruler having a short crosspiece that slides along the edge of a drawing board as a guide to the perpendicular longer section in making parallel lines, right angles, etc.
[1775–85]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.