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

Great wheel

Chronometry; Clock

The first and usually largest wheel in a clock train. The wheel mounted on the line or spring barrel in going-barrel clocks, or on the fusee arbour in fusee clocks.

Sets of hour lines on German sundials of the 16th and 17th centuries are sometimes entitled 'Grosse Uhr' and 'Kleine Uhr'. These terms refer to the Italian (1 - 24) and the normal 2 X 12 equal-hour ...

Gravity clock

Chronometry; Clock

Any clock which is driven by its own weight. The earliest appeared in the mid 17th century. They had a bracket in the form of an arm attached to the wall, the hand holding a chain on which the clock, ...

Label

Chronometry; Clock

The practise of inserting a printed paper label within a clock by the maker or retailer may have developed from a similar, earlier usage among American cabinetmakers. Early labels were printed from ...

Knurling

Chronometry; Clock

Serrations or other indentations on a metal surface such as a clock hand-set button, designed to improve the grip of the fingers upon it. Knurling is produced by a knurling tool which carries a ...

Kitchen clock

Chronometry; Clock

A clock frequently of oak, manufactured from the late 1800s to the early 1900s, that was commonly placed on a shelf in a kitchen.

Kidney piece

Chronometry; Clock

A cam with a profile resembling a kidney commonly used for indicating solar time. Mean time and solar time coincide four times a year and differ by as much as 16 minutes at other times. A ...