Alvin S/S48 professional Alvin T-square features a 1-1/2" wide, spring-tempered, stainless steel blade. The strong, durable cast-aluminum, fixed head with ebony black finish is secured by four pre-set flat-head screws. Perfect T-square for graphic artists, architects, drafters, framers, printers, signmakers, and more. PLAIN, UNGRADUATED. 48" Alvin stainless steel T-square. Price includes oversized shipping.