Manipulate the massive 2nd hand and cooperate With all the 9 o'clock dial to accurately rely the seconds Probably most vital with respect to horological history writ significant was the debut from the “Omega” caliber in 1894, a 19-ligne, crown-established movement whose interchangeable sections ended up meant for straightforward service. https://www.watchesworld.com/a-history-of-watch-reference-numbers/