The comprehensive squares line from Irwin® includes a variety of versatile tools with easy-to-read measurement scales and durable engineering to meet the demands of the jobsite. The line up includes Hi-Contrast Rafter squares and framing squares for easy, accurate readings when cutting rafters and marking a multitude of angles. The combination squares with durable cast zinc bodies and precision etched scales provide accurate 90 deg and 45 deg readings and the T-Bevel is ideal as a depth gauge and for transferring angles. No matter the job, there an Irwin® square to help you do it right. Irwin® Rafter Square, 7 in L Size, Graduations: 1/8 in, 1/10 in, 1/12 in and 1/16 in, Measuring System: Imperial, Aluminum, Silver