The Moore & Wright Engineer's Squares have a precision-ground blade and stock. This 150mm (6 inch) square offers exceptional accuracy for all your engineering and woodworking projects. Crafted with a precision ground blade and stock, its blind riveted construction ensures durability and longevity. The blade is hardened and tempered, making it resistant to wear and tear, and it conforms to the B5939/Grade B standard for quality assurance. Whether you're aligning, marking, or measuring, the Moore & Wright Engineer's Square is an indispensable tool in your toolkit.