Lockermate® by Bostitch® puts a fun twist on ordinary classroom products. Why stick with a standard ruler when you can have the four-sided, multi-use MeasureMate™ ruler! With metric and imperial measurements, an integer number line, and an equivalent fraction number line, this tool will be students' best mate for learning a variety of core curriculum math concepts. MeasureMate™ features a dynamic number line to enhance math fluency and aid visual learners and allows users to simplify fractions visually and seamlessly switch between imperial and metric units for enhanced accuracy. And this tool's squared-off edges make drawing straight lines easy! The MeasureMate™ range is 12 inches, 30.5 cms, -15 to 15 integers, and 0/12 to 12/12 fractions with easy to read and accurate measurements.