| Type name / number: | Mechanical calculator, Nisa K2 |
| Production / SN: | CSN178102 (fixed printed); Vyr Cislo: U3-28085 is year code ? CSN178102 (fixed printed); Vyr Cislo: U1-22646 |
| Calculating principle: | Split stepped drum, Monroe type / clone, Geteilte Staffelwalze(DL) |
| Calculating functions: | Add, Subtract, Multiply, Divide |
| Input accuracy | 8 digits, Full keyboard |
| Calculating accuracy: | 8 / 16 digits |
| Extra's: | When the turns counterclockwise (subtracting) are larger than the clockwise turns, or when you make more then 9 revolutions, the revolution counter shows in red figures. The crank is easily removed by the knob on the keyboard. These are the first one breaking during transport, so handy. Although not every body knows, seen the amount of broken cranks. |
| Designer: | Baldwin, Frank Stephen |
| Production year: | +/ 1969 |
| Case material: | plastic for the main unit and metal for the carriage |
| Weight: | 3.4 Kg |
| External links: | |
| Previous owner: | Jörg Lüddicke, Leipzig -and Frank Sauerzapfe, Hettstedt, Germany |
| Cosmetic imperfections: (I accuse no one): |
The machine is building out of two machines. The three cranks where broken of the first and are replaced (The main was broken on the second machine but could be glued again) Part of the "N" name sign is missing. |
| Date of receiving: | 2010 - april - sept (e-bay), |
| Machine story: | The machines worked perfect on arrival and still do. Simple but robust build. |
Content without guarantee! (UK); In halt Ohne Gewähr! (DL)