Alumicutters are a lightweight yet strong 2-in-1 tool that allows you to measure and then cut along the smooth raised edge that protects your fingers. When fingers are in the groove, the blade has a barrier that prevents injury. There is also a neoprene non-slip base to keep the Alumicutter in place. Measurement markings are created with a photo anodizing process that prevents rubbing off. Made from extruded aluminum, it also makes a great ink border. 12-inch black Alumicutter from the Alumicolor company.