Aluminum straightedges and rulers. Alvin aluminum rulers are available with stainless steel cutting edges. Fairgate rulers feature hardened-aluminum construction and a stain-resistant matte finish for a handsome, yet practical design. 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 Alvin and Fairgate aluminum rulers and straightedges.