/ Jobsite & Shop Tools / Hand Tools / Layout Tools / Squares / RSA-24 * Not actual product image 36131 RSA-24 Rafter Square 36131 Other similar products The RSA-24 is a standard L-shaped square with a solid, one-piece construction. Features Specifications Contact Starrett Features The body of the square is 24" long and 2" wide and the tongue is 16" long and 1-1/2" wide Graduations of 1/8" and 1/16" are on the face side and 1/10", 1/12" and 1/16" on the back The square features rafter information as well as an octagonal measuring scale on the front Specifications Type: Rafter Square Material: Aluminum Length (in): 24" x 16" Width (in): 2", 1-1/2" Thickness (in): 1/8" Graduation Style: English Graduations: 1/16"