A stchoty, Russian abacus.

Mathematics

1901-1930

Napier's Bones

Mathematics

1690

Drawing instruments by Charles Whitwell

Mathematics

1593-1610

Slide rule by Robert Bissaker

Mathematics

1654

Replica of Pascal's calculator

Mathematics

1926

Multo calculating machine made by Addo, Malmo, Swe

Mathematics

1955-1965

Geometrical Groin Vault, string surface model

Mathematics

1872

The Ready Reckoner' book of tables, c 1826.

Mathematics

c.1826

Stanhope square demonstrator, c.1805.

Mathematics

c.1805

Felt and Tarrant Comptometer, 1887.

Mathematics

c. 1900

Brunsviga calculating machine

Mathematics

1931-1939

Muldivo 'Mentor' calculator model WSR, 160 c1955.

Mathematics

c. 1955

Cylindrical form of Napier's bones

Mathematics

c. 1700

Calculating machine (arithmometer), Paris, France, 1880-1900

Mathematics

1880-1900

Pack of four rolls quilted toilet paper with Penrose tiling

Mathematics

1997

Napier's bones

Mathematics

1671-1700

Washington calculator for problems of reinforced concrete

Mathematics

Slide rule, "System Rietz", by Sun Hemmi, Japan

Mathematics

Gunter sector signed Elias Allen

Mathematics

1623

Early model wooden-case comptometer by Felt and Ta

Mathematics

1887-1903

Klein bottle, 1995.

Mathematics

1995

Square signed "J.Ramsden, 1757"

Mathematics

1757

Morland's calculating machine, engraved "Samuel Morland, Inventor, 1666"

Mathematics

1666-1680

Pair of seventeenth-century dividers

Mathematics

1600-1699

Slide rule for exchange of weights and measures

Mathematics

1815

Burroughs Class 4 1000 hand operated adding and listing machine

Mathematics

1925-1935

`Polygraphic papers' coder/de-coder by D'Montfort.

Mathematics

12 inch architectonic sector in ivory and silver,

Mathematics

1733-1795

Thales manual barrel calculating machine, model DE

Mathematics

1950-1960

Double surface of revolution of constant negative

Mathematics

1910

Compendium rule signed Humfrey Cole

Mathematics

1574

Ready reckoner

Mathematics

1990

Sector signed John Allen

Mathematics

1630-1642

Samuel Morland's calculating machine

Mathematics

1666-1695

Sector by Charles Whitwell

Mathematics

1600-11

Ready reckoner for ship's cargoes

Mathematics

1807

Silver sector signed by Culpeper

Mathematics

1700-1737

Burroughs Class 5 hand operated mechanical adding

Mathematics

1920-1925

Drawing instrument set

Mathematics

c1890

Comptometer by Felt and Tarrant Mfg. Co. Chicago,

Mathematics

1915-1920

Kelvin's harmonic analyser

Mathematics

1878

Spirograph and examples of patterns drawn using it

Mathematics

1886

Burroughs hand operated adding and listing machine

Mathematics

1917

Calculating rule by Lenoir in centimetres with conversions

Mathematics

1800-1825

Comptometer, manual operation, sterling keyboard w

Mathematics

1930-1940

Multo Brunsviga type barrel calculating machine

Mathematics

1950-1960

Single surface of revolution of constant negative

Mathematics

1910

Addac adding machine, marked for American currency

Mathematics

1926

Burroughs hand operated adding and listing machine

Mathematics

1913

Navigational Computor Mark III, calculating device

Mathematics