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

A type of late 18th and early 19th-century travelling clock, predecessor of the true pendule de voyage, also sometimes called a foncine or lantern clock. These rectangular brass clocks, surmounted by ...

Carborundum wheels

Chronometry; Clock

An abrasive disc or wheel of artificial stone mounted on a machine spindle and rotated at speed for grinding. Carborundum wheels are obtainable in many diameters, widths, spindle sizes, shapes and ...

Capstan lathe

Chronometry; Clock

A type of lathe fitted with accessories set up for rapid production of identical parts. The distinguishing feature is the self-indexing capstan or tool head which holds several previously positioned ...

Candle clock

Chronometry; Clock

Tradition has it that King Alfred utilised the idea of marking a candle in divisions, each of which would take approximately one hour to burn. This is really not a clock but simply an interval timer, ...

Cam

Chronometry; Clock

Usually a disc or cylinder of irregular profile, contacted by a lever which follows the contour of the disc.

Calotte

Chronometry; Clock

A modern travelling clock which folds into a leather case; also called a threefold or portfolio clock. Calotte (French for skull cap) properly refers only to the circular metal case of the clock.

Callipers

Chronometry; Clock

Pivoted callipers are brass or steel instruments with two pivoted legs adapted to point inwards or outwards accord king to type of need. They are used for taking external or internal comparative ...