- Calculating Machines and Calculating Aids...
- Contex A Adding Machine, c. 1955...
- Fuller's Computing Telegraph and Palmer's Poc...
- 2 Adix Adding Machines...
- Curta Type I Calculator, 1952...
- Calculating Machines and Calculating Aids...
- Madas Calculating Machine, 1913...
- Omega Art-Nouveau Calculating Machine, 1904...
- Calculating Discs and Calculating Aids...
- 3 Calculating Discs...
- 8 Calculating Clocks and Discs...
- Slide Rules and Arithmetic Tables...
- 3 Sectors and a Rule...
- Rare Saxonia 3 (Rolltop) Calculator, 1910...
- Calculating Machines and Calculating Aids...
- Calculator Eclair, c. 1920...
- Burkhardt Arithmometer, c. 1902...
- Calculating Machines and Calculating Aids...
- 6 Disc Adders...
- Magic Wand by Max Levi, c. 1920...
- Curta Type II Calculator, 1966...
- 2 Comptometer Calculating Machines and a Shar...
- Calculating Machines and Calculating Aids...
- The Brical - Money Calculating Machine, c. 19...
- Hart’s Mercantile Computing Machine, 1878...
- Diera Calculating Machine, 1911 onwards...
- 2 Adix Adding Machines...
- 3 Calculating Drums...
- 2 Adix Adding Machines...
- French Specialized Tachylemme Calculator, 187...
- Rare Tate's Arithmometer, c. 1900...
- 4 Calculating Machines...
- 8 Adders and Calculating Aids...
- 3 Stepped-Drum Calculating Machines...
- Curta Type II Calculator, 1956...
- Addimult Multor, c. 1953...
- Replica of Wilhelm Schickard's Mechanical Cal...
- Peerless Calculating Machine, c. 1908...
- Microcalcolatore tipo 2A, 1952...
- Large Collection of Mathematical Literature a...
- Edwin Thacher's Cylindrical Slide Rule Calcul...
- Adix and Certa Adding Machines...
- Curta Type I Calculator, 1950...
- 4 Mechanical Calculating Machines...
- Herrmann's Rechenknecht, 1875...
- The "Small" Pocket Calculator, c. 1915...
- 8 Calculating Clocks...
- 4 Early Arithmetic Tools...
- The Millionaire Calculating Machine, c. 1900...
- 4 Toothed-Bar and Chain Adders...
- 2 Machine Running Times Quick Calculators...
- The Adder English Adding Machine, c. 1915...
- Thomas de Colmar Arithmomètre, c. 1876...
- Le Recta Adding Machine, c. 1912...
- Conto Model C Calculating Machine, 1912 ...
- Twin Marchant Calculating Machine, c. 1942...
- Triumphator Type I Calculator, c. 1914...
- Collection of 9 Abaci...
- Adimul Calculating Machine, 1913 onwards...
- Special Calculators for Various Professions...
- 4 Spoked-Wheel Calculating Machines and a Dem...
- Hines Patent Calculator with 3 Wheels, 1905 o...
- Kuli Calculating Machine, 1913 onwards...
- Peerless Baby Calculating Machine, c. 1922...
- Archimedes Junior Calculator, 1925...
- Rapid Rare Adding Machine, c. 1918...
- Report and Certa Adding Machines...
- Alpina Calculating Machine, 1961...
- Hugo Bunzel Vienna Arithmometer, c. 1905...
- Multifix E1 Calculating Machine, c. 1955...