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 bowl was used to collect the blood from shaving cuts. In the 19th century most men visited the barber or shaved periodically at home. Better off customers would have their own personal sets of razors, one for each day of the week. Advances in ra
Working model of Jennings patent water closet, in case, c. 1900.
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.
Wolf 'Challenge' domestic electric drill, c. 1960.
Tin of 'Casco' casein glue, grade A dry powder to be mixed quickly with water. Manufactured in Great Britain by Leicester, Lovell & Co. Ltd., Ebley Mills, Stroud, Gloucestershire. c. 1955.
Model (scale 1:4). This model represents a double-blast threshing machine made in 1860 by Wallis, Haslam and Steevens. The machine was designed to be powered by a portable steam engine or, as the 19th century progressed, more often by an agricultur