Electrical machine, c 1762. This electrical

North London Railway ticket machine and tickets, c 1900.

Hollerith printing and listing tabulating machine, c 1925.

Electric power station, Luisenstrase, Berlin, c 1900.

Calculating machine, No. 5766.

Workmen's ticket machine, North London Railway, c 1900.

'Bri-cal' adding machine, 1905-1909.

Troncet's 'Totalisateur', c 1895.

Early sewing machine by Elias Howe, c 1845.

Wimshurst's electrostatic machine, c 1882.

'Plus' calculating machine, c 1955.

Electrical machine, c 1762.