Content without guarantee! (UK); Inhalt Ohne Gewähr! (DL)
| Type name / number: | Contex Adding Machine X-55 (electro motor driven) (please see for the series the text at the X-10) |
| Production / SN: | 493 014 452 |
| Calculating principle: | Rocking Segment |
| Calculating functions: | Add, Subtract , automatic multiplycation and automatic division |
| Input accuracy | 10 digits |
| Calculating accuracy: | 11 digits |
| Extra's: | Automatic multiplication: |
| Designer: | |
| Production year: | 1968-1970 |
| Case material: | Polyurethane |
| Weight: | 4,3 Kg |
| External links: | |
| Previous owner: | Mr. M. Sadomskyj , Berlin, Germany |
| Cosmetic imperfections: (I accuse no one) |
Harddly none |
| Date of receiving: | 2013-03-25 |
| Machine story: | 2013-04-02 The previous owner indicated a defect machine. First short investigation shows that the machine fully blocked. 2013-04-02 Removed the plastic top and bottom case. Removed a window plate and sprayed the internal calculator mechanism with W40. All vital locations are hidden, so a difficulty arise to have all needed locations. It was obvious hardened oil what bothers the machine. Turned the motor by hand forward and backwards a little. It seems to me, by the noise, that an mechanism came free by doing so. Pushing the plus key made a complete cycle possible. Put the electricity on and a adding and multiplication was executed. The divisions are still making errors. Further investigation needed. New photo's on the site of a cleaned and open machine. 2013-04-03 The Pinbox transport runs rough / stiff, is lacking behind. And some key's like the 5 is on certain digits an one on the display during calculation input. When the input is done well the division is done well. But strange with a small / neglectible rest. 625 : 25 = 25,0000000089. And the rest is not constand. So a not relaiable calculation / situation. |