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The Mercedes-Euklid is a 
Erhard Anthes, Die Mercedes Euklid (1910–1970)
Mechanical calculators {{tech-stub
The Mercedes-Euklid is a German
German(s) may refer to:
* Germany, the country of the Germans and German things
**Germania (Roman era)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizenship in Germany, see also Ge ...
-invented calculator
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
The first solid-state electronic calculator was created in the early 1960s. Pocket-si ...
from the early twentieth century. It was built by ''Mercedes Büro-Maschinen Werke AG'' in Thuringia
Thuringia (; officially the Free State of Thuringia, ) is one of Germany, Germany's 16 States of Germany, states. With 2.1 million people, it is 12th-largest by population, and with 16,171 square kilometers, it is 11th-largest in area.
Er ...
, Germany in 1905. The first manual mechanical models utilized a proportional-lever design invented by Christel Hamann in 1903.
An electric model, the Mercedes Euklid 30, was released circa 1945, though it may not have been the company's first electric calculator. In the 1960s, another electric model was released under the name "Cellatron."
References
* *Erhard Anthes, Die Mercedes Euklid (1910–1970)
Mechanical calculators {{tech-stub