- "Archimedes Mod. C", 1912...
- Star Adding Machine, 1922...
- "Scribola" and 2 x "Comptator"...
- 3 Logarithmic Calculating Discs...
- 3 Calculating Aids...
- Curta "Type I" Calculator, 1948...
- "Alpina", 1961...
- "Fuller" and "Zeus"...
- Collection of 5 "Feed-Rack Calculators"...
- 4 Spokewheel Calculating Machines...
- Walther WSR 16, c. 1958...
- Collection of 7 "Abacus"...
- Replica of Wilhelm Schickard's Mechanical Cal...
- "BriCal – The British Calculator Mod. B", 190...
- 3 Disc Adding Machines...
- Russian "Original Odhner", c. 1905...
- 2 Calculating Devices...
- "Calculimetre" Calculating Disc, c. 1875...
- "Kuli" Calculating Machine, 1909...
- "The Rapid" and "Golden Gem"...
- "Universal-Adder", 1904...
- "The Locke Adder", 1901...
- 2 Fast Adders...
- "Multifix", c. 1950...
- Calculating Drum by Ernst Billeter, Zurich, S...
- "Mercedes-Euklid Mod. 1", 1905...
- Swiss "Conto" Model C Calculating Machine, 19...
- "Tim Unitas", 1912...
- "Robotron Mod. 314", 1972...
- Olympia CD-400 Desktop Calculator, 1970...
- "Certa" Adding Machine...