• Complete with a protective “shop-hardened” molded case• Precision ground hardened steel
• Angular accuracy .0001 per inch, ± 30 arc seconds
• 3 inches long x 1/4 inch thick
• Simple, quick angle setups
• Eliminate calculations and avoid errors
• Complete set of 12 blocks: 1/4°, 1/2°, 1°, 2°, 3°, 4°, 5°, 10°, 15°, 20°, 25°, 30°