Amazon.com: Alumicolor Architect 12 inch Ruler w/ 4 Bevel Scale for Drawing, Drafting & Engineering, Left to Right Calibrations Divided by 1/32, 1/16, 1/8, 1/4, Silver : Office Products
Amazon.com : Westcott 12"/300mm Raised Grip Aluminium Ruler with Metric and Imperial Scale - Silver : Office Products