The chronograph has an extra device to measure and display the elapsed time. This particularly practical complex requires a sophisticated architecture, best known as the "wheel" chronograph. Chronograph was one of the latest complications in the 19th century. In fact, watchmakers need to deal with other problems by getting enough precision to find the way to stop and start a hand without stopping the entire movement ("independent second hand"). After an unsuccessful attempt by John Arnold, Parisian watchmaker Louis Moinet (1768-1853) devised a device that measures a sixty-second second. He names his invention "compteur de tierces," where "tierces" or "thirds" are astronomical uses, the next sixty-minute subdivision to hour after the minute and second. From 1815 to 1816, Monet produced a totalizer with the help of a watchmaker from Abraham-Louis-Breguet. On September 1, 1821, Nicolas Mathieu-Caisse (1781-1866), the royal watchmaker, used the device of his own invention to provide timekeeping for a series of horseracing races in Champs-Elysees, Paris. A report by the French Academy of Sciences dated 15 October 1821 signed by Antony-Louis-Breguet and Gaspard de Prony shows that Nicolas Mathieu-Kay On that day, a "totalizer of the timer or the distance traveled" was submitted and the Academy of Sciences named it the "two-second hand chronograph." On March 9, 1822, Kai Shi won a five-year patent on its invention. Kaixi's totalizer just as its name at the beginning of each measurement and the moment, it will enamel dial coated with a drop of ink. The function of zeroing appeared only in the middle of the 19th century. The chronograph, now equipped with three key functions of starting, stopping and zeroing, has started to enter a variety of fields, including science, technology and athletics. The first wrist chronograph came out about 1915. Like their pocket watch-like counterparts, they all have only one button with all three functions, usually at the crown. The second reset button then came out in 1934. In 1969, the first self-winding chronograph movement appeared. Most chronographs use a cam to coordinate the function of the chronograph. More sophisticated use of "column wheel", which is a unique high-end quality chronograph. The more difference is that the "integrated" chronograph, or grafted into the movement of the "separate" module. The monopoussoir chronograph is a mechanical masterpiece, as the same button must be activated, stopped and reset chronograph hands sequentially. Chronographs led the revival of mechanical watches in the late 1980s and inspired all sorts of technological and aesthetic innovations. However, only a handful of manufacturers can make their own chronograph movement. Important: "Chronograph" should not be confused with "Chronometer". The Observatory is a watch whose movement has been certified to high standards by the official entity. Chronographs can be certified as a chronometer, not all chronometers.
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