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

Mathematics

Set of architect's drawing instruments by various

Mathematics

2-Foot Rule

Mathematics

1855-1865

Tally Sticks, medieval.

Mathematics

c. 1440

National 3000 automatic bookkeeping calculating machine

Mathematics

1935-1945

Magic brain' calculator. C.1955

Mathematics

c.1955

Morland's Calculating Machine, 1666-1695

Mathematics

1666-1695

Steel dividers by W and C Wynn

Mathematics

1787-1899

Harmonograph by Newton, 1909.

Mathematics

1909

Circular slide rule to calculate nuclear bomb effects

Mathematics

1962

Addo-X electric printing adding machine, model 154

Mathematics

1965-1975

Ellipsograph, in wooden box

Mathematics

Replica quipu, South American, c 15th century.

Mathematics

1974

Single glass Klein bottle model.

Mathematics

1967

NASA 136MC Ambiguity Resolver circular slide rule

Mathematics

1965-1970

Consul' the Educated Monkey

Mathematics

1916-1918

Mercedes Addelectra accounting machine, 1948, seri

Mathematics

1948

Summira 7 adding machine, serial no. 18332, with d

Mathematics

1927

GEM calculator, 1890.

Mathematics

1890-1900

Wheel of Theodorus mathematical quilt

Mathematics

1998

Carpenter's slide rule

Mathematics

1861-1910

Perspective machine by James Watt, engraved "James

Mathematics

Hyperbolic Paraboloid String Surface Model

Mathematics

1872

Set of Haff drawing instruments, in metal case, 19

Mathematics

1975

British Thornton Slide Rule

Mathematics

1967-1975

Calculating Machine for Computing Trigonometry

Mathematics

1664

Teaching Soroban Japanese abacus

Mathematics

2001

Railway surveyor's drawing curves by Stanley, 286

Mathematics

Ullage slide rule, 1759-1776.

Mathematics

1759-1776

Quixsum Fractional Adding Machine

Mathematics

1924-1930

Kentish's Engineers Slide Rule (c. 1840), three sl

Mathematics

1840-1845

Slide rule for voltage and power in decibels with

Mathematics

1953

Logarithmic slide rule

Mathematics

Semi-elliptical trammels by Narrien, in mahogany c

Mathematics

1808-1825

AviatJet 647 Aristo Air Navigation Computer.

Mathematics

1970-1975

Chinese abacus, or suan-pan, 19th century.

Mathematics

1801-1900

Set of Napier's bones, 18th century.

Mathematics

1701-1800

Model of a Half-Twist Surface by Alexander Crum Brown, c 1900.

Mathematics

c. 1900

Gunner's quadrant and perpendicular, c. 1780.

Mathematics

c. 1780

Robertson's 'Rapid Calculator', c 1910.

Mathematics

1910-1920

Nautical chart plotter

Mathematics

1570-1699

Manual transposition cipher 'Rasterschlüssel 44'

Mathematics

after 1944

Surface string model

Mathematics

1872

Geometrical Conoids String Surface Model

Mathematics

1872

Brass drawing pantograph

Mathematics

Pricker, with 4 3/4-inch needle point

Mathematics

1876

Boots Ring Plan Standard 5-inch slide rule with pl

Mathematics

1970-1980

Differential analyser

Mathematics

1935

5-Inch StudioLog 869 Aristo slide rule from the 19

Mathematics

1970-1975

Bolton's 'Cypher wheel' for secret correspondence

Mathematics

1800-1805