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

marquetry

Chronometry; Clock

A type of decoration on wood made by inlaying wood veneers in elaborate designs.

marine or lever clock

Chronometry; Clock

A clock that operates with a hairspring balance and continues to run when transported or set on an uneven surface (unlike pendulum clocks); often used aboard ships.

The zodiac is a broad band in the heavens, centered on the ecliptic, in which lie all the motions of the sun, moon and major planets. Since the orbits of these are in planes not far removed from the ...

turret clock

Chronometry; Clock

Turret clocks are large, normally public clocks, housed in church towers, town halls, stable buildings and similar structures. A complete history of European turret-clock development over the ...

turret-clock escapement

Chronometry; Clock

The earliest turret-clock escapements were of the verge-and-foliot type. There was the occasional variant like the one used by Richard of Wallingford, comprising two wheels on the same axis between ...

turret-clock pendulum

Chronometry; Clock

Early turret clocks used wrought-iron pendulum rods, which were forged bars of rectangular section. The rating nuts were wing nuts formed from a long thin rod wound into spirals. Wooden rods were in ...

turret-clock remontoire

Chronometry; Clock

In most mechanical clocks the source of energy, the weight, drives the escapement through a large step-up gear ratio; thus the impulse the escapement gives to the pendulum at each swing is small. Any ...