Brunsviga

Built by Grimme, Natalis & Co. in Braunschweig from 1892, under licence to Odhner's pinwheel. The name is Latin for Braunschweig. Where the arithmometer and the Millionaire were costly office machines, the Brunsviga became a volume product sold in the hundreds of thousands well into the twentieth century, under the advertising slogan Gehirn aus Stahl — brain of steel. The compact pinwheel design lived on in pocket form in the Curta.