Adding machine with stylus, made by J.Sauter, Esslingen, Baden-Württemberg, Germany Adding machine with stylus Mathematics 1790
Bri-Cal (model B) adding machine by, The British Calculators, Ltd , a in case, with two bone styluses, one red and one white; circular machine, 5 1/4 inches diameter, for adding from 1/2d, to #500 Bri-Cal (model B) adding machine by Mathematics 1905-1920
