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

In this escapement, the escape wheel carries pins inserted into one or both sides of the rim and is usually made with the pallets dead-beat. The pallet arms are of different lengths when made to work ...

Pintongs, or pinvice, or pinchuck

Chronometry; Clock

Pintongs are used to hold wire, drills, broaches and for other purposes. Sliding and screw-nose pintongs or pinvices have a small loose or fixed split chuck at the end of a hollow handle through ...

Hour-glass clock

Chronometry; Clock

A very rare American 30-hour clock movement designed by Joseph Ives, c. 1840, mounted in a figure-of-eight shaped laminated wood case of late Empire design. The case was mounted on a base board, ...

Hourglass

Chronometry; Clock

A device containing sand that flows from the upper to the lower globe to indicate the passing of a certain amount of time.

Hour wheel

Chronometry; Clock

The wheel in a clock which carries the hour hand and forms the last member of the motion train, usually rotating twice in 24 hours.

Index pins

Chronometry; Clock

The curb pins, carried by the shorter end of the index, which embrace the outer turn of the balance spring, for making adjustments to its effective length.

Index

Chronometry; Clock

The lever, also termed 'regulator', which alters the effective length of the balance spring in a clock, allowing alterations in the rate to be made by the clock's owner. The best clocks are free ...