Klein bottle, 1995

Mathematics

1995

Slide rule model 334/82

Mathematics

Silva Combi 2 map measurer for motorists and hikers

Mathematics

c. 1989

Circular slide rule for fuel calculations

Mathematics

Polyhedra model (card)

Mathematics

2000

Reproductions of mathematical instruments from Pompeii

Mathematics

1891

One of three extra scales

Mathematics

Laundry tally board, c. 1680.

Mathematics

c. 1680

Plus Rapid adding machine, standard farthings model

Mathematics

1939

Trimetric Scale

Mathematics

1943

Tarrant Hydraulic Slide Rule

Mathematics

1960-1962

"The Model Ready Reckoner"

Mathematics

1867

Rolling parallel rule by Elliott Bros

Mathematics

1870-1910

Semi-circular protractor 12-inch

Mathematics

1720-1753

Parallel rule, 18 inch, metal, rolling type

Mathematics

1876

Adolf Sonnenschein's 'Arithmometer', late 19th century.

Mathematics

late 19th century

Two gilt bronze arithmetical medals, c.1753

Mathematics

1750-1755

Square Deal

Mathematics

1996

Instrument for drawing parabolas

Mathematics

1892

Railway slide rule

Mathematics

1928

The 'Tachylemme' ready reckoner, c 1876.

Mathematics

c.1876

The 'Tachypoly Plasiasme' ready reckoner, 1880-1884

Mathematics

1880-1884

Ideal Codigraph enciphering machine

Mathematics

1909-1910

Siemens and Halske T52e Cipher Machine, 1940s

Mathematics

1940-1950

George Fuller's spiral cylindrical slide rule

Mathematics

c. 1880

Filipowski's calculating rods (56)

Mathematics

Hyperboloid surface string model

Mathematics

1872

Skew surface with its tangent paraboloid surface string model

Mathematics

1872

Common groin

Mathematics

1872

Number balance 1980-1985

Mathematics

1980-1985

Folded copper sheet mathematical model.

Mathematics

1996

Eidograph, Stanley pattern

Mathematics

1870-1900

Allies flag puzzle in box

Mathematics

1939

Brunsviga, size A calculating machine

Mathematics

1908-1912

Chuckrum board, Indian, late 19th century.

Mathematics

late 19th century

ready reckoner for discounts, mid 19th century

Mathematics

c. 1850

One of three extra scales

Mathematics

Ready reckoner 'Prompt' calculator, 19th century.

Mathematics

c.1863

Sliding Scale of Equivalents for Weights

Mathematics

1801-1850

Six inch brass sector, 1720-1753.

Mathematics

1720-1753

A.G. Thornton Folding Ruler

Mathematics

1890-1910

Measuring Tape (c. 1830)

Mathematics

1830-1840

Klein bottle, 1995.

Mathematics

1995-1996

Contex 30 calculator with handbook

Mathematics

1970-1975

Complete set of cardboard models of second order surfaces in original packing by L. Brill of Darnstadt

Mathematics

c.1900

Symington's puzzle

Mathematics

c. 1900

Klein bottle, 1995-1996.

Mathematics

1995-1996

Combined eidograph and geometric drawing instrument patented 1858 by William Wythes and made by Queen & Co.

Mathematics

1858-1880

Example of interlacing surface in cream wool

Mathematics

c.1900

Ready-reckoner nomogram card for steam pressures. Probably used for work with steam turbines by Frank Harris

Mathematics

1931-1989