Calculators

Addix

Addometer (1928)

Calculators: general guide

Curta Calculator II (1968)

Duconta, from Ducati (1940s)

Everest
Z5

Felt&Tarrant Comptometer
Comptometer 3D11 (1950-1961)

Inzadi

Lagomarsino

Olivetti
Audit and other accounting machine
Divisumma 18 (1973)
Divisumma 28 (1973)
Divisumma 422 (1987)
Logos 27-1 e Logos 27-2 (1965/1967)
Logos 41PD
Logos serie 50 60 (55, 58, 59, 60, 68, 70
Quanta
Olivetti calculator range from 1908 to 1978

PAYEN Aritmometer P3A (1897)

Pitagir calculator (1940s)

Thales
Thales Patent Rechenmachine (1950)

Torpedo
Torpedo Schnell Addiermachine (1930)

Underwood
Underwood 330 (1976)
Underwood 400, 410, 200 (Dry ink jet series-1986)