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

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 ...

Mask

Chronometry; Clock

A human or animal face used as a decoration.

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.

Marble clock

Chronometry; Clock

A generic term applied to a type of clock first manufactured in France towards the end of the 19th century. While true marble has long been used for clock cases, the so-called 'marble' clock has a ...

Mandril

Chronometry; Clock

A lathe with a face plate fitted with dogs for gripping work such as flat plates and parts. It is equipped with a spring or pump centre with a conical point down the centre of the lathe spindle, used ...