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

Hammer tail

Chronometry; Clock

The part of the hammer arm which extends below its pivot and is moved by the lifting pins in the pinwheel.

Hammer

Chronometry; Clock

The clock part that hits the bell or gong to indicate time.

Halfpenny moon or halifax moon

A form of auxiliary lunar dial of circular shape which was adapted for use on square-dial clocks. Although halfpenny moons were occasionally used by London makers as early as 1735, the vast majority ...

Raingo clock

Chronometry; Clock

A type of orrery clock made by the firm of Raingo freres of Paris. The firm made the usual range of domestic clocks but in the decade 1820-30 became particularly well known for orrery clocks. These ...

Rack tail

Chronometry; Clock

The lower extension of the rack which contacts the snail and determines the number of hours or quarters to be struck next.

Rack hook

Chronometry; Clock

The arm acting as a click for the rack in rack striking clocks.

Horologium

Chronometry; Clock

The term was used in mediaeval manuscripts to denote any sort of timekeeper, were it a weight-driven clock or a water clock or a sundial. Consequently the researcher has to be wary of the term. The ...