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 use of pottery and porcelain for clock cases goes back to about the middle of the 18th century. Many examples are simply metal cases with enamelled porcelain plaques set into mounts or perhaps ...

Centre shaft

Chronometry; Clock

Shaft that the minute hand is attached to, geared to make one revolution every 60 minutes.

Celestial globe

Chronometry; Clock

A representation of the starry heavens, imagined as projected on to a sphere from the centre of the Earth and viewed from outside the sphere. Some form of celestial globe must have been constructed ...

Broaches

Chronometry; Clock

A long hardened steel tool, mostly tapered but also available in parallel form, usually with five cutting edges and used for enlarging pivot holes to size after drilling. Burnishing broaches, for ...

Briggs rotary clock

Chronometry; Clock

Invented by John C. Briggs and patented in 1855. Many such clocks were made by the E. N. Welch Manufacturing Co. In the 1870s. The clock has a conical pendulum as the timekeeping element, a device ...

Bretteluhr

Chronometry; Clock

Meaning, 'board clocks' they date from the Biedermeier period in Austria, and were cheap clocks and popular with people of limited incomes. Bretteluhren occur with both weight- and spring-driven ...