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"
Pneumatic dispatch switch for an intermediate station
DNA synthesiser designed and built by Celltech, First generation c. 1980
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
Porcelain bowl, retrieved from Hiroshima after the atomic bomb explosion, August 1945
This paperweight was made to represent a contraceptive pill. The contraceptive pill became available in 1960. It uses female hormones to control fertility and became commercially viable when it was discovered that the Mexican yam was a cheap natural
Laennec stethoscope made by Laennec. Labelled as follows: This is one of Laennec's original stethoscopes, and it was presented by him to Dr Begin a French Army surgeon whose widow gave it to me in 1863.