BTM vertical sorter, c. 1911, ICT Museum no. 33. The function of the sorter was to arrange punched cards in the order required for the tabulator. The cards were fed one at a time into a mechanism which sensed the position of a hole in a particular co
Sample of Bessemer steel, one slice cut from the muzzle of a gun section, bent cold under the steam hammer. Sir Henry Bessemer (1813-1898) was an English inventor and engineer who invented a cheap process for manufacturing steel. He patented a proces
`Royal' all transistor tape recorder Model IM-501, with microphone and earphone, and original packaging. Serial No. 04114. Made in Japan c1958-1965.
Sunbeam Ironmaster Model X21 electric dry iron, 225-250V, 780-970W, AC only, with maroon plastic body, chromed soleplate. Made by Sunbeam Electric Limited, East Kilbride, Glasgow c1955
Fuller's spiral slide rule, no. 849, made by W.F. Stanley, with an instruction booklet, c.1880. The spiral slide rule was invented to increase the length of the scale, and hence the accuracy, of the conventional slide rule. The Fuller's instrument al
The induction motor is the most widely used form of electric motor because it is simple and robust. Nikola Tesla (1856-1943), who was born in Croatia but worked in America, made the first practical induction motors. He made this working model motor t
Round mahogany box 3 1/4 diam containing 18 coloured glass bubbles for measuring the density of proof spirits by A. Maroni 34 Brunswick Place c. 1840-1850"
2 off wind tunnel models of the Avro 730 supersonic bomber, on plinth. The Avro 730 was designed to be a high-altitude supersonic (Mach 2) nuclear bomber and strategic reconnaissance aircraft. The project was cancelled as a result of the 1957 Defence
This mower is an example of the now famous Hover mower made by Flymo Ltd, of Darlington, Co Durham. It was Flymo who made the air-cushion mower into a practical proposition, and into an everyday sight on the lawns of Great Britain.
Metal ammoniaphone, for voice cultivation, in box, invented by Dr. Carter Moffat, manufactured by Medical Battery Co., London