Starrett MASTER PRECISION SQUARE, 12" BLADE

Starrett MASTER PRECISION SQUARE, 12" BLADE 20-12 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. 12"¬Ãƒƒ¹ (300mm) Blade, 7"¬Ãƒƒ¹ (180mm) Beam. FEATURES  The finest precision-checking squares - not graduated. Squareness accuracy to .0001" (0.0025mm) every 6" (150mm)  These hardened steel squares are 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.   SPECIFICATIONS  Made in America: Yes  Blade Length (in): 12"  Blade Length (mm): 300mm  Beam Length (in): 7"  Beam Length (mm): 180mm  Material: Steel