Calculators

Addix

Calculators: general guide

Curta Calculator II (1968)

Duconta, from Ducati (1940s)

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

Lagomarsino

Olivetti
Divisumma 18 (1973)
Divisumma 422 (1987)
Logos 27-1 e Logos 27-2 (1965/1967)
Logos 41PD
Quanta
Olivetti calculator range from 1908 to 1978

PAYEN Aritmometer P3A (1897)

Thales
Thales Patent Rechenmachine (1950)

Torpedo
Torpedo Schnell Addiermachine (1930)

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