Cylindrical slide rule, GER, Fullers Spiral slide rule, showing various mathematical tables. Made by Stanley, London. Ex Stratford Works. Consists of wooden handle, with cylinder, second sliding cylinder round outside. Brass measuring line. 17"x3 1/2" diam. Fullers spiral slide rule Tools of the Trade & Personal Accessories

Twelve-inch wooden slide rule with two slides made by Isaac Carver, London, 1689. Everard gaugerâ€™s slide rule Mathematics 1689

`57/87' slide rule by AW Faber, Rietz, Germany, used in health survey work, by Ann Cartwright, director of the Institute for Social Studies in Medical Care, 1955-1993 `57/87' slide rule Public Health & Hygiene 1955-1993

Slide rule in white plastic with cursor, Aristo-studio no.868, made in West Germany, in leather case with instructions in original printed cardboard box Slide rule in white plastic with cursor, Aristo-st Mathematics 1970-1975

Ten inch slide rule, faced with celluloid, in case, steel-spring back, and metal cursor, with hair line on glass, cursor stamped D.P. D.R.G.M., ruler stamped D.R.P. no. 126499 Ten inch slide rule, faced with celluloid, in case Mathematics

Slide rule made for Shell for oil-fired combustion calculations, plastic, with cursor and reversible slider for Dutch or English use, in carrying case Slide rule made for Shell for oil-fired combustion Mathematics

10-Inch slide rule with sprung cursor by Sterling Plastics Company, New Jersey, in celluloid case with instructions 10-Inch slide rule with sprung cursor by Sterling Mathematics 1960-1975

Slide rule with cursor in plastic, 15 cm, made in Czechoslovakia, c. 1950, by Logarex, in leather case Slide rule with cursor in plastic, 15 cm, made in Mathematics 1947-1952

Slide rule, Reading off Kilowatts, Horse-power etc. Made in Japan. 11 1/2"x1 1/2" Japanese slide rule Tools of the Trade & Personal Accessories

Fowler's calculator type H (pocket size). Includes steel and velvet lined case. Fowler's Calculator Mathematics 1918-1923

Halden's 'Calculex' patent circular slide rule in silver case. "Calculex" Circular Slide Rule Mathematics 1908

"Magnum" long scale calculator by Fowler's & Co., with leather case and instruction booklet. Fowler's "Magnum" Calculator Mathematics 1938-1943

Fowlers & Co. (Calculators) Ltd. "Jubilee Magnum" extra long scale circular slide rule, c. 1960, with case and instruction booklet. "Jubilee Magnum" Circular Slide Rule Mathematics 1957-1963

W H Smith and Sons 5-inch Simplified Rietz slide rule with plastic case W H Smith and Sons 5-inch Simplified Rietz slide rule Mathematics 1970-1980

Academy Series Blundell 804 Darnstadt (10-inch) slide rule with plastic case and instructions Academy Series Blundell 804 Darnstadt (10-inch) sl Mathematics 1965-1975

Blundell Rules Limited (B.R.L.) P15 (5-inch) slide rule with leather sleeve Blundell Rules Limited (B.R.L.) P15 (5-inch) slide Mathematics 1955-1965

Slide Rule made and used in the Occupational Health Department of the London School of Hygiene and Tropical Medicine, 1945-1975 Slide Rule, London School of Hygiene and Tropical Medicine Public Health & Hygiene

Slide-rule, plastic, 11 3/4" x 1 5/8", Omega series, no.401, having adjustable tension, with small 1-inch screwdriver and cursor; in box Slide-rule, plastic, 11 3/4" x 1 5/8", Omega serie Mathematics 1959