Product Info Catalog Tools Hand Levels & Measuring Contractor's Rafter Square, Aluminum, 16 x 24-In. Contractor's Rafter Square, Aluminum, 16 x 24-In. Request a Quote UPC: 49448275014 SKU: 540573 Model Number: CS5 16" x 24" contractor aluminum rafter square with tables, permanent 1/8" stamped graduations include rafter & Essex board measures, clear silver anodized finish. 24" x 2" body, 16" X 1-1/2" tongue, 1/8" thick Permanently stamped numbers & graduations Rafter & Essex Board Measures Aluminum construction w/anodized finish Will not rust or corrode