Addiator Supra calculator tool 1960 Germany

This tool is the early desk version of the later pocket calculator. It is a heavy all metal construction in a metal case so it could be stand upright as well. Deserving the name “Supra”. It features only subtraction and addition but was way cheaper then an electronic device and more clear to use then an abacus and no pen and paper needed.  It comes complete with the original pencil tool. On the top is a pull out handle to put the numbers back on zero. It has signs of use and age but still works correctly, It measures 18 cm or 7 1/4 inches high. Here you find the original 1972 advertisement for the US.