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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
Ormolu
Chronometry; Clock
Ornamental metalwork made from cast bronze, worked and chased before being gilded. It originated in France in the 17th century for decorating cabinetwork and the cases of clocks.
Organ clock
Chronometry; Clock
An unusual form of clock in which the chiming of the hour is preceded or replaced by a short tune played on a miniature pipe organ. The sound made by these clocks is comparable to that of the ...
Open escapement
Chronometry; Clock
The wheel and pallet movement that can be seen on some clock dials.
Oilstone
Chronometry; Clock
An abrasive stone such as Arkansas, India or Turkey, used with a lubricant for sharpening tools to a fine edge. Fine oil is normally used. Oilstones can be obtained in grades such as fine, medium and ...
Free pendulum
Chronometry; Clock
It has been known for a long time that a 'free' pendulum clock will achieve perfect timekeeping. A pendulum, to achieve this, would maintain its arc and do no work, without ever receiving impulse - ...
Franklin clock
Chronometry; Clock
During visits to London in the late 18th century, Benjamin Franklin became friendly with James Ferguson, the famous astronomer and designer of orreries and astronomical clocks. Few of Ferguson's ...
