Roulette #9 Dot 65 Etching Intaglio Printmaking Copper Zinc Plate - E C Lyons - Made in USA Recognized throughout the printmaking world as the finest roulettes available. A roulette tool has a revolving textured wheel mounted on a shaft with a handle. Roulettes are manufactured with dot patterns, line patterns, or irregular patterns and are used on bare copper quickly creating texture that holds ink. The number of dots or lines the tool can produce is indicated as dpi or lpi. Made in the USA