Where was the world's first CMM born?

Carl zeiss, invented by German mechanical designer Zeiss in 1973, is a world-famous manufacturer of precision optical instruments. Mr. Zeiss was founded in Jena, Germany in 1846, and later worked with physicist Ernst? Professor Abbe and chemist Dr Otto Short established the Zeiss Foundation. At present, the company is managed by the Zeiss Foundation affiliated to the German government. The company has a history of 150 years. At the ceremony of 1996, former German Chancellor Kohl personally sent a congratulatory message to Zeiss. Now the company is headquartered in Oberkochen. The company consists of civil optics, industrial measuring instruments, microscopes, medical instruments, semiconductor technology and photoelectric systems. 1973, Zeiss successfully manufactured the world's first CNC CMM UMM500. Since then, new professional technologies have been developed every year, such as electromagnetic sucker for mounting probes, carat spindle for ultra-precision measuring machines, and ZERODUR for precision measuring machines, which is insensitive to temperature and has zero expansion coefficient. 0? Grating ruler, and the unique probe independently developed by Zeiss is in the leading position: double trigger principle, ST3 probe with two axes perpendicular to each other, rotatable 180? And it is 2.5? Indexing RDS/RST rotary probe, active high-speed scanning giant universal scanning probe for scanning measuring machine, non-contact optical measuring probe VISCAN, laser scanning probe AutoSCAN, etc. In addition, Zeiss has a unique rotary milling head, which can directly process various models on CMM. So far Zeiss has a number of patented technologies, which makes Zeiss far ahead of other companies in coordinate measurement technology. Zeiss Far East Co., Ltd. is a branch of German Zeiss in the Far East. It was established in Hong Kong in the early 1980s. Its main tasks are product sales and technical services. With the continuous development of the company, it now has two companies (Zeiss Far East Co., Ltd. [Hong Kong], Zeiss Optical Instruments (Shanghai) International Trade Co., Ltd. [Shanghai]), two technical training centers (Hong Kong and Shanghai) and Theory of Three Represents Theory Office (Beijing, Shanghai and Guangzhou). Zeiss has the most comprehensive after-sales service team in China and many professional technical experts to provide users with professional, rigorous and timely after-sales service. During the period of 1999, Zeiss established the largest product exhibition and training center in Shanghai Waigaoqiao Free Trade Zone, except mainland Germany. At the same time, it has a spare parts warehouse of various parts, which greatly shortens the replacement and maintenance cycle of spare parts and can serve China users better and faster. At present, Zeiss has more than 300 users in China, and more than 400 devices are used in many industries. Zeiss is the inventor and leader of CNC coordinate measuring machine. Zeiss is the world's largest manufacturer of CNC coordinate measuring machines.