Timekeeping components

thumb|Animation of an anchor escapement, widely used in [[pendulum clocks]]

thumb|280px|Tourbillon movement (:File:Stuhrling Tourbillon Movement.ogv|high resolution)

part of a non-digital clock that displays the time

thumb|Clockwork of mechanical Prim wrist watch

central part of the mechanism driving mechanical clocks and watches

electromechanical display device

Sping attached to the balance wheel in timepieces

thumb|An uncoiled modern watch mainspring. thumb|Clock mainspring thumb|A pendulum clock|pendulum wall clock movement showing the two mainsprings which power it. This is a [[striking clock which sounds the hours on a chime; one of the springs powers the timekeeping gear train while the other powers the striking train]]

complication in a mechanical watch or clock that audibly chimes the hours and often minutes at the press of a button

animated, mechanised figure of a person, usually made from wood or metal, which strikes the hours on a bell with a hammer

horology term; special feature in a mechanical clock

pendulum whose period is precisely two seconds

part of a pendulum clock as designed by John Harrison

electromechanical, digital time keeping device

used in sensitive measuring equipment

machine that acoustically measures the ticks of a mechanical watch

type of single-phase motor, typically driving a timepiece

conical pulley-and-chain component in mechanical timepieces

component of the lever escapement of a mechanical watch

Glucydur is the trade name of a metal alloy with a low coefficient of thermal expansion, used for making balance wheels and other parts of mechanical watches.

inexpensive, less accurate version of the lever escapement

type of watch movement with analog display, wherein the energy for a quartz movement is gained by other sources than the conventional battery, typically from the wearer's movements

part of the clockwork used to play music automatically on the bells