"Matador" calculating machine c.1910, by Grimme, Natalis and Company, Braunschweig, Germany "Matador" calculating machine c.1910 1910-1915
Model M Trinks Brunsviga calculating machine on wooden base with metal cover by Grimme, Natalis and Co., Braunschweig, Germany. Model M Trinks Brunsviga calculating machine on wooden base with metal cover by Grimme 1930s
Brunsviga desk-top calculator by Grimme Natalis, c1910 Brunsviga desk-top calculator by Grimme Natalis 1902
Brunsviga calculator by Grimme Natalis & Co, c1900, retailed by Manchester Typewriter Co. Brunsviga calculator by Grimme Natalis & Co 1900
Model M Brunsviga calculating machine, c. 1910, sectioned (cover plates missing) with separate wheels mounted in plastic to show workings. Model M Brunsviga calculating machine 1908-1912