t square
Noun
Meaning
See under T.
Source: Webster's dictionaryAlternative names
T-square
Examples
A common error is to allow the triangles to push the top of the T-square down slightly, thereby throwing off all angles.
A sliding straightedge known as a T-square is then placed on one of the sides, allowing it to be slid across the side of the table, and over the surface of the paper.
Even tasks as simple as drawing two angled lines meeting at a point require a number of moves of the T-square and triangles, and in general drafting can be a time-consuming process.
The T-square is used to hold other devices such as set squares or triangles.