Curta "Type II" Calculator (Grey), 1948

Curta "Type I" Calculator, 1948

Alpina Universal Calculator, 1961

Arithmometer Austria Mod. IV (Double-Sliding Results Display), c

"Adix" Mod. 2, 1903

Swiss "Conto" Model C Calculating Machine, 1912

"Millionär" Calculating Machine, 1913

2 Mercedes Euklid Calculating Machines

"Tim Unitas" Calculating Machine, 1912

"Tim Unitas", 1912

Austria Elektromens Calculating Machine, 1910 onwards

Bunzel-Delton No. 5 Calculating Machine, 1908 onwards

2 Stepped-Drum Calculating Machines, c. 1925

"Tate's Patent Arithmometer", 1907

XxX", 1906

"Saxonia" Calculator, 1895

"Bunzel-Delton No. 5", 1908

Loga Calculating Drum, c. 1930

2 "Consul - The Educated Monkey" Calculators, 1916

3 Rack-and-Pinion Adders

4 Electric Calculators with Nixie Tube Displays, 1965 onwards

Fuller's Time Telegraph and Palmer's Computing Scale, c. 1850

"Hines Patent Calculator" with 3 Wheels, 1905 onwards

"Thomas' Arithmomètre", c. 1870

"Burkhardt Arithmometer", 1878

XxX ('X multiplied by X') Keyboard Calculating Machine, 1906 onw

"Austria" Arithmometer, c. 1910

Bunzel-Delton No. 7 Calculating Machine, 1908

5 Mechanical Adding Machines

5 Mechanical Dial Adding Machines

4 Writing Adding Machines, c. 1925

3 Writing Adding Machines, c. 1925 onwards

"Tasma Mod. C" Adding Machine, c. 1930

Swiss "Conto" Model C Calculating Machine, 1912

"Madas" Calculating Machine, 1913

4 Mechanical Calculators, c. 1925

2 "TIM" (Time Is Money) Calculating Machines, 1909

Burroughs Class 1, Style 6 Adding Machine, c. 1916

9 Mechanical Calculating Machines, 1935 onwards

Single-Digit-Number Adding Device, 1920

The Meilicke Calculator Model 10D, 1906 onwards

8 Calculating Tools

WW2 Brass De Mahe Torpedo Assessor, c. 1940

"The Adder", 1868

"Cosmos" Spoked-Wheel Calculator, 1925

Brunsviga Trinks-Triplex Calculating Machine, 1911 onwards

Bunzel Arithmometer, c. 1910

"Omega" Art-Nouveau Calculating Machine, 1904

"Saxonia" (Rolltop), 1910

4 Electrical Calculators, c. 1925

2 Special Calculating Machines

"L'Infaillible" Spiral Mechanical Calculator, c. 1905

8 Calculating Discs

4 x Abacus

20 Counters for Mercedes Booking Machines, c. 1924

French Brass Sector by Butterfield, c. 1700

"XxX (X multiplied by X)" Calculating Machine, 1906 onwards

"Austria" Model IIb Arithmometer, c. 1909

"Peerless" Calculating Machine, 1904

"Millionär" Calculating Machine, 1895

5 Calculators, c. 1940-1960

2 Stepped-Drum Calculating Machines

4 Spoked-Wheel Calculating Machines

"Burroughs Sensimatic Series 300", c. 1955

Burroughs Class 1, Style 2 Adding Machine, c. 1910

"Bunzel-Delton" Model 4 Calculating Machine, c. 1908

"Archimedes Mod. B" Arithmometer, 1906

"Omega" Art-Nouveau Calculating Machine, 1904

German Adder "Columbus", 1910

4 Brunsviga Spoked-Wheel Calculating Machines

2 "TIM" Stepped-Drum Calculators

2 Mercedes-Euklid Electrical Calculating Machines

3 Spoked-Wheel Calculating Machines

"Arithmomètre Payen", c. 1880

2 Mechanical Stepped-Drum Calculators, c. 1920

"Burkhardt Arithmometer", 1878

"Austria" Arithmometer, c. 1905

3 Rack-and-Pinion and Chain Adders, 1920s

2 Bakelite Adding Machines "Aderes" and "Adix"

2 Mechanical Calculating Machines, c. 1915

8 Mechanical Adding Machines

"Brunsviga B 183 Triplex", c. 1955

"Demos II/No. 3" Calculating Machine, 1923

"Saxonia" Universal Calculating Machine, c. 1920

"TIM Mod. 1" (Time Is Money) Calculating Machine, 1909

"Madas Model IX T Malaga" Calculating Machine, 1925

"Certa" Adding Machine

5 Mechanical Calculating Devices

4 Spoked-Wheel Calculating Machines

4 Disc Adders

4 Mechanical Calculating Machines, c. 1930/40

Burroughs Class 1, Style 6 Adding Machine, c. 1910

4 Brunsviga Spoked-Wheel Calculating Machines and 1 Advertising

4 Mechanical Adding Machines, 1920s

"Saxonia 5" Calculating Machine, 1919 onwards

2 Calculating Machines

2 Monroe Adding Machines, 1930s

6 Spoked-Wheel Calculating Machines

7 Mechanical Adding Machines

4 Spoked-Wheel Calculating Machines

4 Writing Adding Machines, c. 1925

4 Printing Adding Machines, c. 1925

4 Spoked-Wheel Calculating Machines

5 Mechanical Adding Machines

6 Small Calculating Machines

"Thomas' Arithmomètre", c. 1875

"Curta Type II" (Grey), 1948

"Curta Type I" Cutaway Model, 1948

"Curta" Demonstration Model, c. 1950

Anita C/VII Electronic Desk Calculator, c. 1961

10 Electronic Calculating Machines

"Thomas' Arithmomètre", c. 1875

"Austria"Arithmometer, c. 1910