In which German city did lens maker Carl Zeiss start making microscopes full-time in 1847?
Carl Zeiss AG Carl-Zeiss-Stiftung. The Zeiss Gruppe is located in Heidenheim and Jena. Also controlled by the Carl-Zeiss-Stiftung are the glass manufacturers Schott AG and Jenaer Glas, located in Mainz and Jena respectively. Carl Zeiss is one of the oldest existing optics manufacturers in the world. Carl Zeiss opened an optics workshop in Jena in 1846. By 1847 he was making microscopes full-time. By 1861 the Zeiss workshop was considered to be among the best scientific-instrument makers in Germany with about 20 people working in the company, and business growing quickly. By 1866 Zeiss sold their 1,000 microscope. In 1872 physicist Ernst Abbe
Carl Zeiss produce microscopes in large numbers with highest precision. The driving force behind the expansion was Ernst Abbe, but Zeiss had the final say and supported the efforts to the fullest. Competing workshops which did not embrace the calculation of optical systems and the transition to major enterprises were doomed to fail. Ernst Abbe honored the contributions of Carl Zeiss in several major speeches and honored him an enduring memorial with the foundation of the Carl Zeiss Foundation, Carl-Zeiss-Stiftung, Which still endures today. Carl Zeiss Carl Zeiss (; 11 September 1816 – 3 December 1888) was a German scientific instrument maker,