The Rok Hardware 12 inch Ruler is made of a tough flexi plastic materialIncludes fraction / inch / mm / cm converter printed on the back of the rulerMeasuring System: Inch / MetricMaterial: PlasticThis thin bendable ruler is perfect for those hard to squeeze places such as measuring cabinet overlays. Its compact size makes it an ideal choice for desks, bags and pencil cases Construction:Designed with a thickness of 1mm plastic, this ruler can be taken anywhere. The ultra-flexible plastic material allows you to wrap the ruler around a variety of items, including those that are rounded in shape. Easily bends - no need to worry about it breaking. Measurements:No more guessing what each line means. Our Rok Ruler will help ensure that you have accurate measurements every time. Each inch line has a fraction in increments of 1/16" of an inch.Metric and Imperial:This easy-to-read ruler has inches, centimeters and millimeters, as well as a conversion chart on the back. Converting fractions, inches, mm, and cm has never been easier. You can easily measure and convert with this "cheat sheet" math ruler. Design:Designed with both students and professionals in mind. This portable ruler is a useful learning tool, as well as measuring tool for artists, designers, architects, engineers, grade schoolers, high schoolers and college students; Suitable for classroom, school, office, and homes use.