Noun: set square set skwehr
- [Brit] Any of various triangular drafting instruments used to draw straight lines at specified angles
"The architecture student used a set square to draw precise angles";
- triangle [N. Amer]
- A try square with an adjustable sliding head
"The carpenter used a set square to ensure the joints were at perfect right angles"
Derived forms: set squares
Type of: drafting instrument, try square
Encyclopedia: Set square