Adding Machines Gallery
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Marcello Nizzoli, adding machines: 1/ Olivetti Summa 15, 1949 2/ Olivetti Multisumma 20, 1964 3/ Su
The portable adding machine seems like a bit of a misnomer when it arrives at a hefty 20 pounds and
design-is-fine:Ladislav Sutnar, Poster “addo-x, tops in precision engineered adding machines and cal
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