Description: The Big Horn 19059 Precision Steel Engineer 4-inch Square is a must-have for ensuring accurate measurements in woodworking metalworking and engineering projects. This 4” engineering square offers a convenient size making it useful for a variety of both simple and complex tasks. Crafted from hardened spring steel these squares are precision-ground and feature self-locking tapered rivets for long-lasting accuracy and durability. Their compact design and smooth finish make them easy to handle while the permanent 90-degree angles ensure reliable performance. Perfect for marking tool setup and assembly verification this set delivers professional-grade precision.Â