Clock

Clock

Any instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.

Industry: Chronometry

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Clock

A small dial either of flat ring, annulus shape, or engraved or painted, which is added to the main dial to indicate subsidiary movement such as calendar work, Strike/silent mechanisms, alternative ...

automatic lathe

Chronometry; Clock

A lathe specially designed and set up for the purpose of mass-producing specific parts by automatically performing several machining operations in succession, such as turning, threading, milling, ...

automata clock

Chronometry; Clock

Automata clocks are those with moving figures of persons or animals which function while the clock is going or when it strikes. The earliest-known clock to carry automata is the original Strasbourg ...

augsburg clock

Chronometry; Clock

Augsburg clockmakers specialized in automata which performed as the clock went, or when it struck, or indicated the time by slowly revolving and pointing to the hours on a dial. These clocks were ...

atomic clock

Chronometry; Clock

Atomic and molecular vibrations constitute the most regular of motions in nature, but most are at such a high frequency as to be unusable as time standards. Radio-frequency techniques are used to ...

atmos clock

Chronometry; Clock

The ancestor of the Atmos clock is the famous James Cox perpetual-motion clock c. 1760, now in the Victoria and Albert Museum, London. In 1913 J. E. Reutter considered by what means a perpetual clock ...

astronomical clock

Chronometry; Clock

Public astronomical clocks were made in the late 14th and early 15th centuries. Most were inside cathedrals or churches, but some were outside and on public buildings. They represented a working ...