Try square

Try square
	A try square with a steel blade rivetted into a wooden stock faced with brass.
Other names	Gallows square; Joiners square;
Classification	Woodworking square; Woodworking hand tool;
Used with	Pencil, pen, marking knife

A try square or try-square is a woodworking tool used for marking and checking 90° angles on pieces of wood. Though woodworkers use many different types of square, the try square is considered one of the essential tools for woodworking.

The square in the name refers to the 90° angle. To try a piece of wood is to check if the edges and faces are straight, flat, and square to one another. A try square is so called because it is used to try how square the workpiece is.

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