On Display

Double A-frame sextant of 12 inch radius, 1788-1803.

Dated to the late eighteenth century, this brass sextant was made by the London instrument makers, John and Edward Trougton. With its tripod stand and telescopic sights, it was designed for use in navigation, surveying and hydrography. The sextant c

Raingo orrery clock, French, 1830-1832.

Dated 1830--2, this ornate planetary model was made by the Parisian clock makers, Raingo Frères. Called an orrery or more correctly a tellurium, it is a demonstration device to show the motions of the Earth and Moon around the Sun. It consists of a

BTM vertical sorter, 1911.

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, 1860.

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, c 1958-1965.

`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 iron, c 1955.

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

George Fuller's spiral slide rule, no 849, c 1880.

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

Original Tesla induction motor, 1887-1888.

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

Glass bubbles for testing proof spirits, c 1840-1850.

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"

Wind tunnel model of the Avro 730 supersonic bomber, c 1955.

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