Hills slide rule, ivory, for artillery use

Mathematics

Allbrit fixed bar compensating polar planimeter with weighted arm

Mathematics

1955-1960

Hadfield's slide rule

Mathematics

Additional slide for use with Rieger's logarithmic slide rule

Mathematics

Example of G. Charpentier's Calculimetre

Mathematics

Foot rule (folding to 3") with sliding brass calliper

Mathematics

circa 1827

Preludin Calculator in cylindrical slide-rule format for human weight calculations

Mathematics

Richmond Educational Spelling Board

Mathematics

1940-1945

Polyhedron

Mathematics

1876

Circular slide rule to calculate nuclear bomb effects

Mathematics

1962

Bearing rate slide rule

Mathematics

Symetroscope, patent callipers in wood with brass scale based on "systeme Silvy-Leligois"

Mathematics

Ultrasonic slide rule in leather pocket case

Mathematics

10-Inch MultiLog 0970E Aristo slide rule from the 1973 catalogue

Mathematics

1970-1975

Captain Roux's 'Paracyclone'

Mathematics

1875

Section pen

Mathematics

1876

Ivory plotting scale of type known as single scale

Mathematics

5-Inch Elektro 815 Aristo slide rule from the 1973 catalogue

Mathematics

1970-1975

5-Inch Studio 868 Aristo slide rule from the 1973 catalogue

Mathematics

1970-1975

Modern Japanese Abacus

Mathematics

10-Inch Scholar LL 0903LLE Aristo slide rule from the 1973 catalogue

Mathematics

1970-1975

Machine for finding the roots of cubic equations both real and impossible

Mathematics

Proportional compass

Mathematics

1843-1844

Protractor and scale

Mathematics

Case for C.V. Boys' curve drawing integrator

Mathematics

1880-1885

Parabolagraph by Coradi No.4. in box

Mathematics

Rolling-sphere planimeter made by G. Coradi

Mathematics

Wooden box containing Amsler's integraph

Mathematics

Integrator by Amsler No.162 in box

Mathematics

Rolling planimeter by Coradi No.800 in box

Mathematics

Mercedes calculating machine

Mathematics

1920-1933

Tasma electric adding machine with printer

Mathematics

Boots Ring Plan Standard 5-inch slide rule

Mathematics

1970-1980

Brass sector with semicircular arc and two folding slit sights

Mathematics

Rolling parallel rule by Cooke

Mathematics

1922-1950

mechanical analogue calculator

Mathematics

1935

Box for geometry set belonging to Major J F Doelberg

Mathematics

c. 1900

Slide rule (excise)

Mathematics

Fearnley's patent Universal calculator

Mathematics

Notebook belonging to J F Doelberg

Mathematics

c. 1900

Example of interlacing surface in cream wool

Mathematics

circa 1900

Midget circular slide rule by Dietzgen

Mathematics

1955

Combined protractor and set square

Mathematics

Slide rule for triangle-mesh-reinforced concrete slabs

Mathematics

1909-1915

"Puzzle Patch Picture Puzzles"

Mathematics

1991-1995

Base and glass cover, for Frederick Corder's harmonograph

Mathematics

Callender cable calculating machine

Mathematics

circa 1904

Bradley's New Number Builder game, 1930-1945

Mathematics

1930-1945

Circular slide rule by Paul Pouech ("Cercle complet" model)

Mathematics

Game counter

Mathematics