• Includes 2", 3", 4" and 6" squares
• Made from high quality tool steel
• True right angles inside and outside
• Beams and blades are precision ground
• Blade is hardened

Machinist squares made in the US by Products Engineering Corporation (PEC).

Length of blade is measured from inner edge of beam to end of blade.

These squares are square within 0.0006" over the length of the blade. The two sides of the blades and beams are parallel within 0.0005" over their length.