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Hollerith 45 column horizontal electrical sorting machine, 1920-1930

1920-1930

80-column hand-punch by British Tabulating Machine Co. Ltd

Punched Card Reproducer, Model 202

1955

Hollerith key punch, model 20, 1909-1932

1909-1932

Half adder from Type 555 Hollerith Electronic Calculator

1957

BTM "Mercury Cup" tabulator, hand operated c. 1908, ICT Museum No.49

Hand operated Mercury cup tabulator

1908

BTM vertical sorter c. 1911 ICT Museum No.33

BTM vertical sorter, 1911.

1911

Collection of early punched cards used by Hollerith and BTM, pre 1959

Collection of early punched cards used by Hollerith and BTM

BTM hand gang punch, 45 column c. 1904. ICT Museum No 2.

Hand gang punch

1904

`Hollerith' card punch, for making train indicator board master cards, by the British Tabulating Machine Co. London, BR Midland region, 1950-1965

Hollerith card punch

1950-1965