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Facit mechanical calculator, model ESA by Atridabe

Mathematics

1951

Routledge engineer's folding slide rule, improved

Mathematics

1841-1860

Triacontahedron

Mathematics

1876

Hexecontahedron

Mathematics

1876

Triacontahedron

Mathematics

1876

Combination slide-rule, telescope and quadrant

Mathematics

1753

180-Degree Protractor

Mathematics

1870-1880

Boxwood Sector, 1680-1720

Mathematics

1680-1720

Brass ellipsograph

Mathematics

1880-1920

Drafting compendium signed `Brevete S.G.D.G.', c.

Mathematics

1897-1903

Case for C.V. Boys' curve drawing integrator

Mathematics

1880-1885

Japanese abacus with case

Mathematics

1996

Circular plastic slide rule, model no.28, made in

Mathematics

Slide rule, 11" made of bamboo in occupied Japan

Mathematics

Three-Sided Rule

Mathematics

1860-1900

Boots Ring Plan Standard 5-inch slide rule with pl

Mathematics

1970-1980

Graph template: Dufton's design

Mathematics

Ellipsograph, ebony and electrum, by W. & S. Jones

Mathematics

1852-1859

Architectural rule, brass, with scales of equal pa

Mathematics

1720-1753

Improved Hawthorn slide rule, 12" folding with bra

Mathematics

Enamelled badge with pin attachment made by Felt a

Mathematics

1957

Military rule, wooden, by Forster-Groom & Co. Ltd.

Mathematics

Plotting scale

Mathematics

1876

Kentish's Engineers Slide Rule (c. 1860-1870), thr

Mathematics

1860-1870

Plotting scale

Mathematics

1876

Temperature or brewing rule with ivory mounted sli

Mathematics

1833-1855

Temperature slide rule

Mathematics

1830-1840

Vector slide rule designed by Dr.E. Friedlander

Mathematics

1957

Specimens illustrating the construction of machine

Mathematics

1876

Pair of 6-inch brass callipers with sector, by Th

Mathematics

1720-1753

Parallel rule and protractor, engraved "J.Sisson F

Mathematics

Multiplication Board Set

Mathematics

2000

Allbrit [rule-form] linear planimeter with magnif

Mathematics

1964-1966

4 ft Gauging Rod (c. 1850), folding, by DRING & FA

Mathematics

1850-1855

Parallel rule, 6-inch, ivory, rolling type

Mathematics

1876

Plotting scale

Mathematics

1876

Plotting scale

Mathematics

1876

Head rod, 3' 8" x 1 1/2", with slide, for gauging

Mathematics

1808-1815

Stanley's 5 3/4-inch improved drawing pen with lif

Mathematics

1876

Plotting scale

Mathematics

1876

Excise officer's slide rule by W. Rix, Verie type

Mathematics

1740-1746

Plotting scale

Mathematics

1876

Proportional compass

Mathematics

1876

Protractor scale

Mathematics

1876

"The Readiest Reckoner in miniature"

Mathematics

1824

Slide rule, boxwood, 2 foot; one slide, engraved:-

Mathematics

Model of a polar planimeter

Mathematics

1880-1882

Ivory sector by W. Elliott & Sonst, 56 Strand, Lon

Mathematics

1850-1853

Four inch pocket case of drawing instruments by T.

Mathematics

1720-1753

Allbrit [rule-form] linear planimeter

Mathematics

1974-1976