End of Life. In quartz movement the end of battery life is indicated by the second hands which starts to jump every four seconds. The battery should be changed immediately.
French term (but commonly used in English-speaking countries) for a movement blank, i.e. an incomplete watch movement which is sold as a set of loose parts, comprising the main plate, the bridges, the train, the winding and setting mechanism and the regulator. The timing system, the escapement and the mainspring, however, are not parts of the "ebauche".
Process of covering metal articles with a film of other metals. The article is immersed in a chemical solution; electric current (D.C.) flows through the solution from a piece of metal (anode) to the article (cathode), depositing metal thereon by electrolysis. Metals which can be used for plating are: 1) gold, a precious metal generally yellow in colour; 2) chromecan, be it white or black; 3) palladluma, precious metal that is generally white; 4) rithenium, also a precious metal but is usually grey.
Set of parts (escape wheel, lever, roller) which converts the rotary motion of the train into to-and-fro motion (the balance).
