The try square is an instrument which is used to check squareness (angles of 90°) of a surface.
The accuracy of measurement by a try square is about 0.002 mm per 10 mm length, which is accurate enough for most workshop purposes. The try square has a blade with parallel surfaces. The blade is fixed to the stock at 90°.
Try squares are made of hardened steel.
Try squares are specified according to the length of the blade i.e. 100 mm, 150 mm, 200 mm.
Uses of Try Square
The try-square is used to:
- Check the squareness
- Check the flatness
- Mark lines at 90° to the edges of workpieces
- Set workpieces at right angles