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

Revolving-band clock

Chronometry; Clock

A clock on which time is shown by numbered bands revolving past a fixed marker. The idea possibly developed from early Gothic moving-dial clocks which similarly had a fixed pointer, and was first ...

Revolutionary clock

Chronometry; Clock

In 1793 the introduction in France of what revolutionaries regarded as rational time measurement, on a decimal base, prompted the production of decimal clocks. Revolutionary fervour was otherwise ...

Steady pin

Chronometry; Clock

The dowel pins commonly used in pairs to ensure the accurate location of a balance cock, etc.

Star wheel

Chronometry; Clock

A wheel with pointed teeth, used in conjunction with a snail in rack striking work.

A support for work of various kinds. A stake is usually, but not invariably, made of steel. There are many designs, from a simple steel block placed on the bench, to complex tools with a wide variety ...

Stackfreed

Chronometry; Clock

A device used until the early 17th century to equalise the force of the mainspring over its period of run. The mechanism usually takes the form of a cam geared to the mainspring arbor, and a roller ...