Pair of dice made of ivory cellulose nitrate with black markings Plastics and Modern Materials 1900-1930
Burroughs Class 4 1000 hand operated adding and listing machine with keyboard for Sterling currency Mathematics 1925-1935
Sycamore (wood) case with lid, for the Mark of Alicante from the Castlereagh Collection Weighing & Measuring 1800-1818
Combined replica sleeve and original ball and socket for plane table outfit by W. & S. Jones Surveying 1801-1830
Set of 8 brass nested cup weights for the Mark of Alicante from the Castlereagh Collection for Alicante Weighing & Measuring 1800-1818
Sectioned catalyst convertor matrix for car exhaust, 1982-1983 Environmental Science & Technology 1982-1983
Model, scale 1:30, of 240 ft wooden receiving tower for CH (Chain Home) radar, Mark II West Coast pattern Radio Communication 1940-1962
Set of 7 square brass grain weights and two folded pieces of paper: one of which is inscribed with ‘Alicante’, for the Mark of Alicante from the Castlereagh Collection Weighing & Measuring 1800-1818
Model, scale 1:30, of 240 ft wooden receiving tower for CH (Chain Home) radar, Mark I East Coast pattern Radio Communication 1936-1962
Clockwork drive designed by the Rev. Sheepshank for refracting telescope of 5.9-inch aperture by Dollond mounted on English type equatorial mounting Clockwork drive, for refracting telescope of 5.9-inch aperture Astronomy 1829
The London Hospital Survival Predictor, 1972 The London Hospital Survival Predictor, London, England, 1972 Clinical Diagnosis 1972
Trial model for part of Babbage's difference engine, on board Demonstration model of Babbage's Difference Engine No. 1, 19th century. Computing & Data Processing 1871-1900
Brunsviga manual calculator model B 13RM ser.no.16459 by Olympia Werke AG, Wilhelmshaven but made in Spain. Brunsviga manual calculator model B 13RM ser.no.16459 by Olympia Werke AG Mathematics 1965-1975
Boxed set of 9 brass nested cup weights for a Mark of 8 ounces for gold and silver from the Castlereagh Collection for Barcelona (Spain). Nested cup weights, brass Weighing & Measuring 1800-1818
Motor driven Disk Memory Unit, for Elliott/NRDC 401 Computer MkI, c. 1953 Motor driven Disk Memory Unit Computing & Data Processing
Circular slide rule by Troughton and Simms, designed by William Froude c.1877, with inscription plate and three logarithmic scales, used at the Admiralty Experimental Establishment, by Troughton and Simms, London, 1887 Circular slide rule by Troughton and Simms Froude 1877