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Counterfeit watch. A counterfeit watch (or replica watch) is an unauthorised copy of an authentic watch. High-end luxury watches such as Rolex, Patek Philippe and Richard Mille are frequently counterfeited and sold on city streets and online. With technological advancements, many non-luxury and inexpensive quartz watches are also commonly ...
Fusee (horology) A fusee (from the French fusée, wire wound around a spindle) is a cone -shaped pulley with a helical groove around it, wound with a cord or chain attached to the mainspring barrel of antique mechanical watches and clocks. It was used from the 15th century to the early 20th century to improve timekeeping by equalizing the ...
The pallet fork is above the balance wheel in this watch movement. The pallet fork is a component of the lever escapement of a mechanical watch. [ 1] The pallet fork and the lever form one component that sits between the escape wheel and the balance wheel. Its purpose is to lock the escape wheel, and release it one tooth at a time at each swing ...
Valjoux (for Vallée de Joux, "Joux Valley") is a Swiss manufacturer of mechanical watch movements. It is known primarily for chronograph ébauche movements that are used in a number of mid- to high-range mechanical watches. The company is a part of ETA, and is a member of the Swatch Group. They are also the movement providers for early Rolex ...
In horology, a movement, also known as a caliber or calibre ( British English ), is the mechanism of a watch or timepiece, as opposed to the case, which encloses and protects the movement, and the face, which displays the time. The term originated with mechanical timepieces, whose clockwork movements are made of many moving parts.
The spiral balance spring is visible at top. A balance wheel, or balance, is the timekeeping device used in mechanical watches and small clocks, analogous to the pendulum in a pendulum clock. It is a weighted wheel that rotates back and forth, being returned toward its center position by a spiral torsion spring, known as the balance spring or ...
A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves. A mechanical watch is driven by a mainspring which ...
Miyota produces various 'standard' and 'premium' grade mechanical movements for automatic wristwatches.. The Miyota 8215 is an entry level [[hack watch-latest versions|non-hacking-earlier versions ] twenty-one jewel three-hand with date automatic wristwatch movement with a uni-directional winding system (left rotation) with an accuracy of -20 to +40 seconds per day, and a power reserve of over ...