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

In 1960 Patek Philippe, a Geneva-based firm, marketed a clock to rival the Atmos clock for perpetuance of motion. Housed in a variety of case styles, the clock has a transparent panel on the top of ...

lifting piece

Chronometry; Clock

The two-armed lever used in striking clocks to release the striking work.

Lepaute's escapement

Chronometry; Clock

This escapement is a variant of the pinwheel escapement. In the usual French pinwheel escapement, the two pallet arms are of unequal length. Jean Andre Lepaute reasoned that the friction and impulse ...

leading-off work

Chronometry; Clock

Early turret clocks seldom had dials, and indicated the passage of time by striking the hours on a bell. When dials were fitted, the hands were connected to the clock by rods; the gears and rods to ...

lead weights

Chronometry; Clock

The earliest weight-driven clocks probably had stones as weights. Lead is perhaps the best material. It is easily worked, is reasonably cheap, and has a high density, which permits smaller driving ...

Italian monastic alarm clocks

Chronometry; Clock

In the late 15th and early 16th centuries, the art of pictorial marquetry or inlay work was widespread in Italy as a decoration for studies, other rooms and monastic choir stalls; a fair number of ...

monastery clock

Chronometry; Clock

Monasteries in the Middle Ages, required to hold services at certain hours of the day and night, originally used water clocks to indicate the time. Later, simple verge escapement mechanical clocks ...