A Leibniz wheel or stepped drum is a cylinder with a set of teeth of incremental lengths which, when coupled to a counting wheel, can be used in the calculating...

animation on the side shows a nine-toothed Leibniz wheel coupled to a red counting wheel. The counting wheel is positioned to mesh with three teeth at...

invented the Leibniz wheel, later used in the arithmometer, the first mass-produced mechanical calculator. In philosophy and theology, Leibniz is most noted...

builders. The operating mechanism, invented by Leibniz, called the stepped cylinder or Leibniz wheel, was used in many calculating machines for 200 years...

Wilhelm Leibniz (1646–1716) was a German philosopher and mathematician. In engineering, the following concepts are attributed to Leibniz: Leibniz wheel, a...

first to have a movable carriage. Leibniz built two Stepped Reckoners, one in 1694 and one in 1706. The Leibniz wheel was used in many calculating machines...

the possible errors". Leibniz had not succeeded in creating a calculator that worked properly, but he had invented the Leibniz wheel, the principle of a...

flaws, Leibniz' reckoner was not very functional, but similar devices (Leibniz wheel) remained in use into the 1970s. In the 19th century, Englishman Charles...

no evidence that Leibniz constructed this pinwheel machine, but his Leibniz wheel, which, when coupled to a sliding counting wheel, can mesh with a variable...

Gottfried Leibniz who spent forty years designing a four-operation mechanical calculator, the stepped reckoner, inventing in the process his leibniz wheel, but...