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Slide rule for exchange of weights and measures

Mathematics

1815

Felt and Tarrant Comptometer, 1887.

Mathematics

c. 1900

Square signed "J.Ramsden, 1757"

Mathematics

1757

Conoid surface model

Mathematics

1872

Hyperbolic Paraboloid String Surface Model

Mathematics

1872

Compendium rule signed Humfrey Cole

Mathematics

1574

Ready reckoner

Mathematics

1990

Stanhope square demonstrator, c.1805.

Mathematics

c.1805

Geometrical Groin Vault, string surface model

Mathematics

1872

Sector signed John Allen

Mathematics

1630-1642

Drawing instruments by Charles Whitwell

Mathematics

1593-1610

Samuel Morland's calculating machine

Mathematics

1666-1695

Sector by Charles Whitwell

Mathematics

1600-11

Gunter sector signed Elias Allen

Mathematics

1623

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

Mathematics

1880-1900

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

Mathematics

1666-1680

A stchoty, Russian abacus.

Mathematics

1901-1930

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 by Robert Bissaker

Mathematics

1654

Napier's Bones, c.1690.

Mathematics

c. 1690

Burroughs hand operated adding and listing machine

Mathematics

1917

Burroughs Class 4 1000 hand operated adding and listing machine

Mathematics

1925-1935

Comptometer, manual operation, sterling keyboard w

Mathematics

1930-1940

Calculating rule by Lenoir in centimetres with conversions

Mathematics

1800-1825

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

Mathematics

Multo Brunsviga type barrel calculating machine

Mathematics

1950-1960

Muldivo 'Mentor' calculator model WSR, 160 c1955.

Mathematics

c. 1955

Burroughs Class 5 hand operated mechanical adding

Mathematics

1920-1925

Washington calculator for problems of reinforced concrete

Mathematics

Drawing instrument set

Mathematics

c1890

Burroughs hand operated adding and listing machine

Mathematics

1913

Addac adding machine, marked for American currency

Mathematics

1926

Comptometer by Felt and Tarrant Mfg. Co. Chicago,

Mathematics

1915-1920

Single surface of revolution of constant negative

Mathematics

1910

Early model wooden-case comptometer by Felt and Ta

Mathematics

1887-1903

Navigational Computor Mark III, calculating device

Mathematics

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

Mathematics

Set of architect's drawing instruments by various

Mathematics

12 inch architectonic sector in ivory and silver,

Mathematics

1733-1795

National 3000 automatic bookkeeping calculating machine

Mathematics

1935-1945

Multo calculating machine made by Addo, Malmo, Swe

Mathematics

1955-1965

Thales manual barrel calculating machine, model DE

Mathematics

1950-1960

Double surface of revolution of constant negative

Mathematics

1910

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

Mathematics

General Hannyngton's slide rule, formerly belongin

Mathematics

Klein bottle, 1995

Mathematics

1995-1996

Klein bottle, 1995-1996.

Mathematics

1995-1996

New Hampshire Interest Calculator.

Mathematics

1870-1910