Combination slide-rule, telescope and quadrant

Mathematics

1753

Unique Electrical Slide Rule

Mathematics

1935-1950

Logarithmic slide rule, card and plastic, for Ohm'

Mathematics

1949

Photo (8"x11") of pencil drawing of Staffel's calc

Mathematics

1927

Photo (8"x11") of Stern's calculating machine (181

Mathematics

1927

Section of a Comptometer by Felt & Tarrant showing

Mathematics

1908-1909

Hexecontahedron

Mathematics

1876

Triacontahedron

Mathematics

1876

Two photographs (bromide prints) of an original ca

Mathematics

1925

Triacontahedron

Mathematics

1876

Square, folding type, engraved: 'Canivet a La Sphere a Paris'

Mathematics

Tasma electric adding machine with printer

Mathematics

Boots Ring Plan Standard 5-inch slide rule with pl

Mathematics

1970-1980

Polyhedron model (card)

Mathematics

Polyhedron model (card)

Mathematics

Polyhedron model (card)

Mathematics

Polyhedron model (card)

Mathematics

Polyhedron model (card)

Mathematics

Polyhedron model (card)

Mathematics

PIC Electrical Slide Rule

Mathematics

1960-1967

Railway slide rules

Mathematics

1928

Railway slide rules

Mathematics

1928

Paper calculating ready reckoner rule with cardbpo

Mathematics

1965-1970

Slide rule, wood; made by Rooker, one slide size 2

Mathematics

Spacing dividers, probably English, early 19th cen

Mathematics

1800-1850

One 6-inch brass sector for fortification and gunn

Mathematics

1675-1700

Sector with scales of chords and equal parts combi

Mathematics

1700-1799

"Unique" 10 inch slide rule, model Universal II, w

Mathematics

1920-1950

"Unique" 7-inch slide rule, model Universal I, wit

Mathematics

Beam compass

Mathematics

1870-1876

Mathematical reckoning rule

Mathematics

1750-1800

Buckyball or Buckminsterfullerene model

Mathematics

2007

Rolling Parallel 9-Inch Rule

Mathematics

1845-1850

AA 010 Comprehensive slide rule by British Thornton, 1974

Mathematics

1974

180-Degree Protractor

Mathematics

1870-1880

Geometrical Models

Mathematics

1905-1915

Boxwood Sector, 1680-1720

Mathematics

1680-1720

Brass ellipsograph

Mathematics

1880-1920

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

Mathematics

1897-1903

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

Mathematics

1720-1753

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

Mathematics

1876

Enamelled badge with pin attachment made by Felt a

Mathematics

1957

Model of a polar planimeter

Mathematics

1880-1882

Wooden slide rule for artillery rangefinding

Mathematics

1816-1827

Mahogany case for pantograph

Mathematics

1738-1777

Metal set square, 60 degrees

Mathematics

1806-1861

Pantograph in box

Mathematics

1791-1851

Parallel rule, 6-inch, ivory and electrum, ordinar

Mathematics

1876

Timber Slide Rule

Mathematics

1789-1810

Allbrit [rule-form] linear planimeter with magnif

Mathematics

1964-1966