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

Maltese clock

Chronometry; Clock

The Italian altar clock died out in the early 18th century, but the general design was revived in the early 19th century in the island of Malta. The pioneer is believed to have been Kalcidoniju ...

The earliest weight-driven clocks probably had stones as weights. Lead is perhaps the best material. It is easily worked, is reasonably cheap, and has a high density, which permits smaller driving ...

Nutation

Chronometry; Clock

A small oscillation of the Earth's axis of rotation about its mean position, due to the moon's attraction on the Earth's equatorial bulge, superimposed on the slow rotation of the axis round the pole ...

Nut

Chronometry; Clock

The threaded metal block used to secure components with the aid of a screw. By the middle of the 16th century screws had begun to be used by clockmakers and they have been used increasingly since. ...

Nuremberg hours

Chronometry; Clock

During the late 16th and 17th centuries a special system of hour reckoning was employed in the Nuremberg area differing from that of the rest of Europe. It used equal hours, but numbered the daylight ...

Mirror clock

Chronometry; Clock

Also known as looking-glass clock. A term used almost exclusively in connexion with New Hampshire wall clocks cased in frames with split columns on all four sides, usually with corner blocks mounted ...