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Chronometry

The science of the measurement of time.

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Chronometry > Clock

basket top

Chronometry; Clock

A shaped top to the cases of verge bracket clocks of the late 17th and early 18th centuries. In its simpler form it consisted of a rectangle of mitered ovolo moldings veneered ...

battery

Chronometry; Clock

When a number of electrical cells are connected together in a series or parallel arrangement, they are collectively known as a battery. This term is also frequently applied to a ...

battery clock

Chronometry; Clock

Alexander Bain designed the first battery clock shortly before 1838. Today the term is applied to portable electric clocks which depend on a dry cell or battery for its electrical ...

baroque

Chronometry; Clock

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 ...

barrel

Chronometry; Clock

The cylindrical brass box containing a mainspring, or designed to accommodate cables, cat gut or some other strong and flexable line to receive power from the weights of a clock.

barrel arbor

Chronometry; Clock

The mainspring barrel generally rotates on the barrel arbor, and the center of the mainspring is attached to it by a hook. In a going-barrel clock it is squared at one end to take ...

barograph clock

Chronometry; Clock

A clock which continuously records changes in atmospheric pressure. Robert Hooke was the first to use a clock to drive a drum carrying a strip of paper on which a pen drew a ...

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