Napier's Bones, c.1690.

Mathematics

c. 1690

A stchoty, Russian abacus.

Mathematics

1901-1930

Musical transposition calculator, in circular slide-rule format

Mathematics

1820

National 3000 automatic bookkeeping calculating machine

Mathematics

1935-1945

Gunter sector signed Elias Allen

Mathematics

1623

Addo-X electric printing adding machine, model 154

Mathematics

1965-1975

Multo calculating machine made by Addo, Malmo, Swe

Mathematics

1955-1965

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

Mathematics

1666-1680

12 inch architectonic sector in ivory and silver,

Mathematics

1733-1795

Pack of four rolls quilted toilet paper with Penrose tiling

Mathematics

1997

Napier's bones

Mathematics

1671-1700

Stanhope square demonstrator, c.1805.

Mathematics

c.1805

Geometrical Groin Vault, string surface model

Mathematics

1872

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

Mathematics

1880-1900

Klein bottle, 1995.

Mathematics

1995

Slide rule by Robert Bissaker

Mathematics

1654

Felt and Tarrant Comptometer, 1887.

Mathematics

c. 1900

Samuel Morland's calculating machine

Mathematics

1666-1695

Brunsviga calculating machine

Mathematics

1931-1939

Set of Haff drawing instruments, in metal case, 19

Mathematics

1975

Single surface of revolution of constant negative

Mathematics

1910

Double surface of revolution of constant negative

Mathematics

1910

Cylindrical form of Napier's bones

Mathematics

c. 1700

Diene's multi-base arithmetic blocks, 1960-1965.

Mathematics

1960-1965

Sector signed John Allen

Mathematics

1630-1642

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

Mathematics

Navigational Computor Mark III, calculating device

Mathematics

Early model wooden-case comptometer by Felt and Ta

Mathematics

1887-1903

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

Mathematics

Spirograph and examples of patterns drawn using it

Mathematics

1886

Hyperbolic Paraboloid String Surface Model

Mathematics

1872

Replica of Pascal's calculator

Mathematics

1926

Square signed "J.Ramsden, 1757"

Mathematics

1757

Compendium rule signed Humfrey Cole

Mathematics

1574

Ready reckoner

Mathematics

1990

Drawing instruments by Charles Whitwell

Mathematics

1593-1610

Sector by Charles Whitwell

Mathematics

1600-11

Ready reckoner for ship's cargoes

Mathematics

1807

Pair of seventeenth-century dividers

Mathematics

1600-1699

Silver sector signed by Culpeper

Mathematics

1700-1737

Slide rule for exchange of weights and measures

Mathematics

1815

Washington calculator for problems of reinforced concrete

Mathematics

Special metal protractor for machine for finding the roots of cubic equations

Mathematics

Set of architect's drawing instruments by various

Mathematics

The Ready Reckoner' book of tables, c 1826.

Mathematics

c.1826

Burroughs Class 4 1000 hand operated adding and listing machine

Mathematics

1925-1935

Burroughs hand operated adding and listing machine

Mathematics

1917

Comptometer, manual operation, sterling keyboard w

Mathematics

1930-1940

Calculating rule by Lenoir in centimetres with conversions

Mathematics

1800-1825

Muldivo 'Mentor' calculator model WSR, 160 c1955.

Mathematics

c. 1955