
Try square
A 'try square' is a
woodworking or a metal working
tool used for marking and measuring a piece of
wood. The ''Square'' refers to the primary use of the tool: measuring the accuracy of a right angle (
90 degrees). A piece of wood that is
rectangular, flat, and has all edges (faces, sides, and ends) 90 degrees is called four square. A board is often
milled four square in preparation for using it in building furniture.
Try square is sometimes spelled "tri-square", but this term can also refer to a
combination square.
A traditional try square has a broad blade made of
steel or
brass that is
riveted to a wooden handle. The inside of the wooden handle typically has a
steel or
brass strip fixed to it that is precisely 90 degrees to the blade. Some blades have either metric or English graduations for measurement.
See also
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carpentry square
★
combination square
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machinist square
★
steel square