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

impulse face

Chronometry; Clock

The face on an escape-wheel tooth or pallet nib, shaped to give or receive impulse.

First invented in the 19th century by Carl August Steinheil of Munich University as a means of indicating time on a number of clocks simultaneously from a central master clock fitted with electrical ...

impulse

Chronometry; Clock

That part of an escapement's cycle during which energy is transferred to the pendulum or balance from the escapement; also called 'lift'.

ignatz clock

Chronometry; Clock

See Flying Pendulum Clock.

hydrogen clock

Chronometry; Clock

A version of the hydrogen clock, also known as the gas-operated clock, is in the Clockmakers' Company Museum in London; it was designed by Pasquale Andervalt in Italy c. 1835. It consists of an ...

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, ...