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

Butterfield sundial

Chronometry; Clock

A form of adjustable sundial invented by Michael Butterfield, an English instrument maker who is known to have worked in Paris between 1678 and 1680. The Butterfield sundial is a small, portable ...

cable driven

Chronometry; Clock

Mechanical movement powered by weights hanging on cables wound with a key or crank.

The remedy for a worn pivot hole, bushing provides it with a new bearing surface. The worn hole is opened further to round it up and to bring it to its original center. The new brass bush has a fine ...

burnishing

Chronometry; Clock

Bringing the surface of metal to a brilliant finish by friction, the action slightly compressing and hardening the metal surface but removing no metal. The metal surface to be burnished is first ...

book clock

Chronometry; Clock

In the late 16th and early 17th centuries, when elaborate designs were popular for both clocks and watches, a number of clocks were made in the form of a book, with the movement jointed to the case. ...

Arabic numerals

Chronometry; Clock

Most common number style (1, 2, 3, 4, etc. ) used on clock dials.

pendulum

Chronometry; Clock

A suspended, swinging rod and weight (bob) that regulates the clock movement in keywound/mechanical clocks. The pendulum in quartz (battery) clocks is purely decorative; the clock does not need it to ...