411 REFERENCE · Wiktionary
Leibniz wheel
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
Invented by Gottfried Wilhelm Leibniz in 1673.
Noun
A cylinder with a set of teeth of incremental lengths which, when coupled to a counting wheel, can be used in the calculating engine of a class of mechanical calculators.
en eponyms