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

Quill

Chronometry; Clock

A device by which a spindle may be rotated and at the same time moved axially, as in the driving spindle of a bench drill in which the drill can travel to and from the work while spinning. It may ...

Shortly after the excellent stability of frequency control by quartz crystal when applied to valve oscillator circuits was discovered, efforts were directed to producing a clock using this principle ...

Quartz crystal

Chronometry; Clock

A crystal of quartz suitably cut and mounted will produce an electrical effect when mechanically deformed; conversely, it mechanically deforms when subjected to an electrical field. This is known as ...

Plate clock

Chronometry; Clock

The Telleruhr or dish clock was popular in south Germany and Austria in the late 17th century, and the idea was revived in the 20th using a china plate instead of a metal one. The movements were ...

Plate

Chronometry; Clock

The front and back of the clock's movement or works.

Planting

Chronometry; Clock

Positioning and marking out the parts of a clock between or on the clock plates, so that they will function correctly. It includes the correct positioning of the hands and winding squares on the ...

Planishing

Chronometry; Clock

The operation of working a metal surface to a smooth, evenly rounded or flat shape, usually in soft metal such as copper, silver or brass. The metal is hammered with a planishing hammer on an anvil, ...