Following are the major moving parts inside a watch:

* Crown-which is used to change the time shown on the hands (also known as the stem).

* Anchor-a tiny arm that attaches the escape wheel to the hairspring inside the balance wheel.

* Escape wheel-has special teeth that are held and then released by the anchor—this makes all the wheels move and relaxes the coil in the barrel wheel very slightly each time.

* Third wheel-center wheel and fourth wheel are connected by this wheel.

* Fourth wheel-connects the escape wheel to the third wheel.

* Barrel wheel-holds a coil that is tightened when the crown is wound.

* Balance wheel-this wheel does not have teeth-it holds the hairspring.

* Hairspring-is the part that keeps the time by rocking back and forth. It is kept moving by being pulled on the coil in the barrel wheel.

* Center wheel-connects the clock mechanism to the hands.

* Winder-connects the crown to the barrel wheel.

* Finger wheels-gears that are moved by the center wheel—they slow that movement down so that the hour hand moves twelve times slower than the minute hand.

You will need a good working experience in order to repair a watch. However, repairing watches is both challenging and rewarding skill.