Blade Length: 6 inches; Graduations: 4R (1/8”, 1/16”, 1/32”, 1/64”) Accuracy: Extremely high precision; Ideal for Precision Layout Work. Durable: All Blades Fully Hardened and Tempered. Easy-to-Read: High Contrast; Satin chrome Finish. Made in USA: The PEC Double Square is a professional-grade precision tool manufactured by Products Engineering Corporation, one of the last remaining American precision measuring tool makers. This versatile adjustable double square features a 6-inch fully hardened and tempered blade with high-contrast 4R graduations (8ths, 16ths, 32nds, and 64ths) etched on a durable satin chrome finish for glare-free, easy reading. Key Features: Ideal for precision layout work Can be used as a parallel marker or traditional double square All blades fully hardened and tempered for long-term durability High-contrast, micro-fine blade graduations Durable, easy-to-read satin chrome finished blade Ground-flat ruler heads for accurate scribing and measurement transfer Why Woodworkers and Machinists Love It The 6” size strikes the perfect balance—larger and less finicky than 4” models yet compact enough for detailed work. Users praise its superior feel over cheaper alternatives better out-of-box squareness, smoother sliding action, flatter ground surfaces for precise lines, and highly visible etched markings. It’s excellent for transferring measurements directly, setting depths, checking squareness, or marking on stair nosing, jigs, and fine joinery. A hefty, high-quality tool that feels at home in any professional woodworking shop or machine shop. Elevate your precision work with this American-made heirloom-quality double square—built to last a lifetime.