A perfect complement to our precision knives and cutting tools, the X-ACTO 3" Triangle Ruler allows you to easily make perfectly straight cuts, every time. This ruler is crafted with a durable, all metal design that resists cuts or nicks from even the sharpest X-ACTO cutting tools. The 3" Triangle Ruler features acid etched measuring lines that wonâ??t fade or wear easily. Additionally, the rulerâ??s gradations are accurate to the millimeter, allowing you to measure even the most minute finesse cuts and trims. X-ACTO office tools and supplies are crafted with the same quality and attention to detail as the legendary X-ACTO knife. Our commitment to quality and performance assures that an X-ACTO product will stand up to the toughest jobs for as long as you need them.