• Solid aluminum extruded square will not bend or break
• Graduated notches for ''pulling'' layout lines
• Stamped conversion tables
• Thicker frame design ensures safe use as a saw guide
• Mark or cut boards up to 12 Inch wide
• Measuring System: Inch

Empire Magnum™ 3990 Rafter Square, Heavy-Duty, Body Size: 12 Inch, Aluminum, Measuring System: Inch, Includes: Instruction Manual With Complete Rafter Tables