Milwaukee 7 In. magnetic rafter square has a stronger frame and is the most versatile rafter square. Features three rare earth magnets for a secure hold on ferrous materials. Scribe notches from 1 In. to 6 In. allow for easy ripping of lumber. 1 In. cutout helps prop pipe making it easier to cut on the job site. Reinforced frame provides durability on the job site and high visibility laser etched markings make it easy to read.