Starrett Steel Master Precision Square with Hardened Ground, Lapped Beams and Blades - Hardened Steel, 6" Blade Length, 4-5/16" Beam Length - 20-6

The Starrett 20 Master Precision Square is the finest precision-checking square. Squareness accuracy to .0001" (0.0025mm) every 6" (150mm). This hardened steel square is used when extreme accuracy is required. The beams and blades are hardened, ground and lapped to ensure parallelism and straightness. The beam is grooved at the inner corner for clearance of burr or dirt. Made of high quality tool steel, with the finest of craftsmanship throughout.

• Precision Square - The finest of precision-checking squares, not graduated. Squareness accuracy to .0001" (0.0025mm) every 6" (150mm). The square can provide an accurate measurement each time.
• Durable Construction - Starrett Precision Square is made of high quality tool steel, with the finest of craftsmanship throughout. The square is designed to last a lifetime.
• Reliable - The beams and blades are hardened, ground and lapped to ensure parallelism and straightness. The beam is grooved at the inner corner for clearance of burr or dirt. It is very reliable and perfect for any project you take on.
• A Brand You Can Trust - Starrett tools have been the go-to choice of professionals and do-it yourselfers. With a legacy of quality and innovation, the tools they produced are essential for any workshop.
• The Exceptional Toolmaker - Manufacturing excellent precision tools for over 140 years, the L.S. Starrett Company keeps to strive for excellence by providing quality tools for industrial, professional, and consumer markets worldwide.