A pair of dice made in imitation ivory celluloid, early 20th century. Plastics and Modern Materials 1901-1930
Piece from the London University Computing Service Atlas computer Computing & Data Processing c. 1964
Model, scale 1:30, of 240 ft wooden receiving tower for CH (Chain Home) radar, Mark II West Coast pattern Radio Communication 1940-1962
Sinclair Cambridge pocket calculator, by Sinclair Radionics Limited, Cambridgeshire, England, 1973 Sinclair Cambridge pocket calculator Computing & Data Processing 1973
Burroughs Class 4 1000 hand operated adding and listing machine with keyboard for Sterling currency Mathematics 1925-1935