- Curta "Type II" Calculator (Grey), 1948...
- Curta "Type I" Calculator, 1948...
- Alpina Universal Calculator, 1961...
- Arithmometer Austria Mod. IV (Double-Sliding ...
- "Adix" Mod. 2, 1903...
- Swiss "Conto" Model C Calculating Machine, 19...
- "Millionär" Calculating Machine, 1913...
- 2 Mercedes Euklid Calculating Machines...
- "Tim Unitas" Calculating Machine, 1912...
- "Tim Unitas", 1912...
- Austria Elektromens Calculating Machine, 1910...
- Bunzel-Delton No. 5 Calculating Machine, 1908...
- 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,...
- 3 Rack-and-Pinion Adders...
- 4 Electric Calculators with Nixie Tube Displa...
- Fuller's Time Telegraph and Palmer's Computin...
- "Hines Patent Calculator" with 3 Wheels, 1905...
- "Thomas' Arithmomètre", c. 1870...
- "Burkhardt Arithmometer", 1878...
- XxX ('X multiplied by X') Keyboard Calculatin...
- "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, 19...
- "Madas" Calculating Machine, 1913...
- 4 Mechanical Calculators, c. 1925...
- 2 "TIM" (Time Is Money) Calculating Machines,...
- Burroughs Class 1, Style 6 Adding Machine, c....
- 9 Mechanical Calculating Machines, 1935 onwar...
- Single-Digit-Number Adding Device, 1920...
- The Meilicke Calculator Model 10D, 1906 onwar...
- 8 Calculating Tools...
- WW2 Brass De Mahe Torpedo Assessor, c. 1940...
- "The Adder", 1868...
- "Cosmos" Spoked-Wheel Calculator, 1925...
- Brunsviga Trinks-Triplex Calculating Machine,...
- 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,...
- 8 Calculating Discs...
- 4 x Abacus...
- 20 Counters for Mercedes Booking Machines, c....
- French Brass Sector by Butterfield, c. 1700...
- "XxX (X multiplied by X)" Calculating Machine...
- "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....
- "Bunzel-Delton" Model 4 Calculating Machine, ...
- "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 Mach...
- 3 Spoked-Wheel Calculating Machines...
- "Arithmomètre Payen", c. 1880...
- 2 Mechanical Stepped-Drum Calculators, c. 192...
- "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. 1...
- "TIM Mod. 1" (Time Is Money) Calculating Mach...
- "Madas Model IX T Malaga" Calculating Machine...
- "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....
- 4 Brunsviga Spoked-Wheel Calculating Machines...
- 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. 19...
- 10 Electronic Calculating Machines...
- "Thomas' Arithmomètre", c. 1875...
- "Austria"Arithmometer, c. 1910...