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Of or relating to any device for measuring and displaying time.

Contributors in Clocks


Acorn clock

Timepieces; Clocks

An American clock made in three styles: shelf, dwarf, and wall manufactured during 1847-1850. The design is attributed to Jonathan Clarke Brown.

Act of parliament clock

Timepieces; Clocks

A British act of parliament passed in 1797 levied a tax of five shillings per annum on all clocks and is said to have caused a decline in their manufacture. Rather than maintain a domestic clock ...


Timepieces; Clocks

Adjustments made to the balance, balance spring or pendulum of a clock to compensate for the effects of variations of temperature are known as compensating. Adjusting refers specifically to minor ...


Timepieces; Clocks

That part of a clock which may be set to give audible warning at a predetermined time. The mechanism is usually triggered by a lever which moves into a slot in a cam driven by the hour wheel, ...

Adam style

Timepieces; Clocks

The neoclassical style in architecture of the second half of the 18th century, named after its most notable exponent, Robert Adam (1728-1792).

Leap second

Timepieces; Clocks

A leap second is the one-second adjustment that is periodically applied to the atomic clocks that act as reference points for world's timekeeping in order to keep them in sync with the Earth's ...

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