With 60 years of commitment and still going strong, Charles Leonard, Inc. Is a second generation family business. We take pride in our relationship with quality and value, which goes back to day one. The Charles Leonard plastic metric ruler features both English and metric Markings. The translucent plastic construction allows for viewing through to the page. With a double beveled edge, this 12 inch ruler is ideal for home, school or office use. Set of 36 assorted color rulers.