Composite Laminated Ruler Inch & Metric. 2 Meter. 1/2" Width. 10 Sections. 1mm & 1/16" Increments. Outside Reading. Laminated layers with longitudinal fiberglass strands to ensure unmatched rigidity, water proof outdoor grade. Play-free, wear-free, dirt resistant joint with spring pin for constant tension. 90° & 180° joint click. High visibility white on black with permanent deep embossing with protective steel caps.