• Size: 12" X 12"

• Material: Aluminum Alloy

• Graduations: 1/4"

• Heavy Duty Aluminum Alloy Construction For Durability And Longevity

• Functions As A Framing Square, Try Square, Miter Square, Protractor, Line Scriber, Saw Guide, Stair Gauge And Out-Of-Square Corner Angle Finder

• Black Graduations For Easier Reading With Matte Finish To Prevent Glare

• Includes Swanson Blue Book Of Rafter Length. Roof Construction And Stairway Layout, Layout Bar And Hardware

• Blue Book Also Includes Tables, Formulas And Diagrams

Warning this product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.