- Arithmometer Hugo Bunzel, Vienna, c. 1902...
- Finnish Disc Adder by Hedberg, 1924...
- Arithmometer "Tim", 1909...
- Collection of Adding Machines, 1920-60...
- XxX ('X multiplied by X') Calculating Machine...
- Curta Type I Calculator, 1963...
- Walther Diwa 32 Calculating Machine, 1970-72...
- 2 Logarithmic Calculating Drums...
- Commodore PET 2001 ("Blue PET"), 1977...