This 12" flexible ruler is constructed of clear recycled PET plastic and measures up to 12" in length. Made in USA, the ruler has an overall size of 1.5"H x 12.25"W. Great promotion for schools, libraries, and more. It has both inches and centimeter measurements, with inches on the top and centimeters on the bottom. These rulers are made for general and promotional purposes. While they can help with basic measuring, they're not designed for high-precision needs like medical, laboratory, or technical use.