This Olivetti Multisumma 20 adding machine was created in the 1960s.

The Olivetti company always paid great attention  to the aesthetic design of it's products, with engineers working alongside noted artists, architects and industrial designers. Olivetti machines from the 1960s and 1970s were crafted by well-known industrial designers including Ettore Sottsass and Mario Bellini. Several of Olivetti's products are now regarded as classics of modern art.

Dimensions. : 

Depth - (without paper roll holder) - 31 cm

Width -                                                       - 20.5 cm

Height-                                                      - 14.5 cm

Weight: 5+ kg