from The Century Dictionary.
- noun An instrument for performing multiplication and division.
from the GNU version of the Collaborative International Dictionary of English.
- noun A calculating machine.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun dated A
from Wiktionary, Creative Commons Attribution/Share-Alike License
We have also added a machine known as the arithmometer and two typewriters to our clerical department.
The differences [Delta] D and [Delta] I are thus calculated, while the values of D (v) and I (v) are obtained by summation with the arithmometer, and entered in their respective columns.
On the way in which this is done, however, depends to a great extent the durability and trustworthiness of any arithmometer; in fact, it is often its weakest point.
Check out this Russian model of arithmometer, ominously named "Felix" (after Felix Dzerzhiski, founder of Soviet KGB) It was based on 1914 St. Petersburg's Odner-Hill company device, shown on the bottom, click on image for more -
Generally an arithmometer with multiple cogs and stepped drum mechanism, there is however a lot to disassemble.
n. obsession with numbers, especially compulsion to count things. arithmometer, armiferous adj. - carrying weapons or arms. adj. - like, pertaining to or composed of rings. armillary sphere, celestial globe composed only of rings marking equator, tropics, etc.