Aluminum straightedges and rulers. Alumicolor AlumiCutter rulers are useful tools to measure and cut without changing tools. AlumiCutter's raised edge and finger groove protect fingers while cutting. The AlumiCutter works well with both hobby/craft knives and rotary knives for safe cutting. Alvin aluminum rulers are available with stainless steel cutting edges. Clearly marked black graduations in 16ths and 8ths of an inch on opposite edges make accurate drafting simple. Available in several popular lengths-both Metric and Customary units. Ideal straightedges for the drafter, graphic artist, designer, crafter, hobbyist. Quality-made, durable Alumicolor aluminum rulers and straightedges.