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° and 45° readings, and the T-Bevel is ideal as a depth gauge and for transferring angles. No matter the job, there’s an IRWIN Square to help you do it right. Rafter Squares are used for marking angles for cutting rafters and for scribing lines, and also used as a protractor and saw guide.