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

The Black Forest industry was hard hit by American competition in the years 1842-60 and in the 1860s began to make clocks on the American pattern in factories. The old type of wall striking clock, ...

position clock

Chronometry; Clock

Also called a regulator clock.

portico clock

Chronometry; Clock

A portico is a classical porch with a decorated entablature supported on columns, and often completed by a triangular pediment. On modern buildings in classical style, the pediment sometimes contains ...

porcelain case

Chronometry; Clock

Porcelain is a hard translucent material of which an important ingredient is china clay (kaolin), with various other materials added according to type, and fired to a high temperature in a potter's ...

polyhedral sundial

Chronometry; Clock

Providing that the style, or shadow-casting edge, of a sundial is parallel to the Earth's axis, hour lines can be drawn on any surface on which the sun shines. This allows the designer of dials to ...

polishing muller, or stake

Chronometry; Clock

A block of steel with a flat polished surface on which a polishing medium such as rouge is mixed with oil. It is usually contained in a wooden box to keep out dust and grit.

polishing mills, or laps

Chronometry; Clock

Tools with a revolving disc charged with a polishing compound. These are of various designs, some being made for the specific purpose fo polishing one type of componenet. Depending on the work, the ...