Napier's Bones, c.1690.

Mathematics

c. 1690

Klein bottle, 1995.

Mathematics

1995

A stchoty, Russian abacus.

Mathematics

1901-1930

Pack of four rolls quilted toilet paper with Penrose tiling

Mathematics

1997

Stanhope square demonstrator, c.1805.

Mathematics

c.1805

Felt and Tarrant Comptometer, 1887.

Mathematics

c. 1900

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

Mathematics

1880-1900

Set of architect's drawing instruments by various

Mathematics

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

Mathematics

1666-1680

Washington calculator for problems of reinforced concrete

Mathematics

National 3000 automatic bookkeeping calculating machine

Mathematics

1935-1945

Thales manual barrel calculating machine, model DE

Mathematics

1950-1960

Double surface of revolution of constant negative

Mathematics

1910

Slide rule by Robert Bissaker

Mathematics

1654

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

Mathematics

Muldivo 'Mentor' calculator model WSR, 160 c1955.

Mathematics

c. 1955

Replica of Pascal's calculator

Mathematics

1926

Napier's bones

Mathematics

1671-1700

Samuel Morland's calculating machine

Mathematics

1666-1695

Multo calculating machine made by Addo, Malmo, Swe

Mathematics

1955-1965

Drawing instruments by Charles Whitwell

Mathematics

1593-1610

Sector signed John Allen

Mathematics

1630-1642

Sector by Charles Whitwell

Mathematics

1600-11

Slide rule for exchange of weights and measures

Mathematics

1815

Calculating rule by Lenoir in centimetres with conversions

Mathematics

1800-1825

Burroughs hand operated adding and listing machine

Mathematics

1913

Spirograph and examples of patterns drawn using it

Mathematics

1886

Cylindrical form of Napier's bones

Mathematics

c. 1700

Square signed "J.Ramsden, 1757"

Mathematics

1757

Ready reckoner

Mathematics

1990

Compendium rule signed Humfrey Cole

Mathematics

1574

Geometrical Groin Vault, string surface model

Mathematics

1872

Gunter sector signed Elias Allen

Mathematics

1623

Ready reckoner for ship's cargoes

Mathematics

1807

Pair of seventeenth-century dividers

Mathematics

1600-1699

Silver sector signed by Culpeper

Mathematics

1700-1737

Burroughs hand operated adding and listing machine

Mathematics

1917

Burroughs Class 4 1000 hand operated adding and listing machine

Mathematics

1925-1935

Drawing instrument set

Mathematics

c1890

Single surface of revolution of constant negative

Mathematics

1910

Two Stereoscopic Photographic Diagrams

Mathematics

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

Mathematics

1960-1965

Comptometer, manual operation, sterling keyboard w

Mathematics

1930-1940

Multo Brunsviga type barrel calculating machine

Mathematics

1950-1960

Burroughs Class 5 hand operated mechanical adding

Mathematics

1920-1925

Addac adding machine, marked for American currency

Mathematics

1926

Comptometer by Felt and Tarrant Mfg. Co. Chicago,

Mathematics

1915-1920

Navigational Computor Mark III, calculating device

Mathematics

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

Mathematics

Early model wooden-case comptometer by Felt and Ta

Mathematics

1887-1903