Varnished interlacing sheets of leather in a cylinder shape

Mathematics

1912-1914

Exechequer tally, 1812

Mathematics

1812

Slide rule for interest calculations

Mathematics

1824

Protractor by Dollond, late 18th century

Mathematics

1770-1800

Brass clinometer, in mahogany case, Troughton and

Mathematics

Double Slide Rule (dated 1815), inscribed on one s

Mathematics

1815-1820

Pocket set of drawing instruments

Mathematics

1831-1835

Set of drawing instruments

Mathematics

1839-1865

Parker's Prestometer Tablet, mid 19th century

Mathematics

c. 1860

Polar planimeter

Mathematics

Pocket set of drawing instruments

Mathematics

1791-1859

Compasses and dividers

Mathematics

1876

Electric adding machine, 1965

Mathematics

1965

Allbrit [fixed index] compensating polar planimete

Mathematics

1974-1976

Plotting scale

Mathematics

1876

Set of four ivory triangular rules in cardboard case

Mathematics

1850-1869

Gunner's callipers, English pattern, by M Berge

Mathematics

1800-1819

Circular slide rule: "Dialor for calculation of vi

Mathematics

Drawings of the great inverted retrosnub icosidode

Mathematics

1976

Bing's "Circular Square"

Mathematics

Elaborate set of geometrical wooden models for dem

Mathematics

1850-1899

Rietz slide rule

Mathematics

1970-1975

Twin-wheeled rolling drafting pencil, late 19th ce

Mathematics

1880-1899

Railway slide rule

Mathematics

1928

Slide Rule

Mathematics

1903-1920

Model showing the Torsion of a Prism having Ridges

Mathematics

1876

Napier's bones

Mathematics

1601-1700

Booklet containing nomogram entitled "Abaque ou co

Mathematics

1845

Stylus-operated adding machine DA 702, with batter

Mathematics

Set of Napier's bones, 18th century.

Mathematics

1701-1800

Folded copper sheet mathematical model.

Mathematics

1996

Ott's universal planimeter

Mathematics

Scales

Mathematics

Globetrotter Series ready reckoner calculating rul

Mathematics

1965-1972

Ellipsograph (elliptic compass); probably made by Henry Perigal

Mathematics

Rietz 109 Aristo slide rule [20-Inch], with access

Mathematics

1970-1975

Aristo 10076 chemist conversion ready reckoning ru

Mathematics

1970-1975

Model of a cubic surface

Mathematics

Mental Blocks puzzle game

Mathematics

1968

Rhombicosahedron a semi-regular solid, one of 43 u

Mathematics

1963-1965

Sectioned portion of Burrough's adding listing mac

Mathematics

1926

Icosidodecadodecahedron a semi-regular solid, one

Mathematics

1963-1965

Logynon pregnancy calculator, circular volvelle re

Mathematics

1984

Twelve inch slide rule, with two slides: wood; mak

Mathematics

Proportional compass (one of two)

Mathematics

Slide rule for ferro-concrete calculations by Aris

Mathematics

1973

Circular logarithmic slide rule by K. Emil Troger,

Mathematics

Triangular wooden rule with plumb line

Mathematics

TriLog 108 Aristo clear plastic projection slide r

Mathematics

1970-1975

Adisco area measurer

Mathematics