| Demos
II Calculator 1923 |
|
| "Was constructed in Switzerland
(overall length 14 inches) by the
firm of Theo Müggli in Zurich. It's working principle makes it stand
apart from practically all other contemporary machines: back and forth
rocking toothed segments that made intermittent contact with the
counters. Mechanically it only permitted to perform additions, so subtractions
had to be made by means of complementary digits. Being cheaper than other
machines was it's main (and perhaps only) selling argument." Freddy
Haegens.
Courtesy of: Freddy Haeghens |
