An interesting, late Italian pinwheel calculator, which is typical for the final refinements in pinwheel calculators in the 1950s, as well as the budding office machine industry in Italy (think Olivetti!) -one hand carriage movement, coupled with a twist knob on the front of the carriage, back transfer of the result ("Reimpostazione"), and a very light action of everything. To compensate for the small weight of the machine, it has a full rubber footprint, so it doesn't slide all over the table when operated. Very well thought out machine, and if we can believe the serial number, quite a lot have been built. I can't help but think that the numbering may have been a bit opmillionistic though, or more of them would have surfaced.

Esacta  picture 1

Esacta  picture 2

Esacta  picture 3

Esacta  picture 4

Esacta  picture 5