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

Four-hundred-day clock

Chronometry; Clock

A clock that runs a full year on a single winding. It is also called an anniversary clock.

Foot wheel

Chronometry; Clock

The foot wheel, like the bench wheel, is used to drive a lathe or other machine, but it is much larger. It is mounted below the bench and rotated by means of a foot-operated, pivoted treadle. A ...

The first form of controller used in verge-escapement clocks. The foliot is made from a metal bar, usually with saw cuts in its upper edge which are used to locate two equal weights, one on each arm, ...

Oil sink

Chronometry; Clock

The depression surrounding a pivot hole. Early in the 18th century, Henry Sully discovered that a small basin around the pivot hole reduced the tendency for oil to spread across the plate and dry up. ...

Oil lamp clock

Chronometry; Clock

Known also simply as a lamp clock, this fulfilled the dual purpose of providing light, like an ordinary oil lamp, and telling the time. The principle is simple: a conventional clock movement revolves ...

Oil

Chronometry; Clock

To lubricate clocks effectively is one of the horologist's greatest problems. In the past, mixtures of animal and vegetable oils were used. Great care is necessary in refining oils, to prevent their ...

Ogee moulding

Chronometry; Clock

The name given to the cyma recta moulding, used architecturally and in furniture; the reversed ogee (or O. G. , O-gee, etc. ) is known as the cyma reversa. The section of the moulding is simply a ...