The history of the Junghans clock factory began in 1861 in Schramberg in the Black Forest. Erhard Junghans initially founded the company to manufacture clock components. From 1866, it produced its own movements and clocks. Under the leadership of his sons, particularly Arthur Junghans, the business became one of Germany's most important clock and watch manufacturers. By 1903, with more than 3,000 employees and annual production exceeding three million timepieces, Junghans was the world's largest clock and watch factory. The company made wall clocks, table clocks, alarm clocks, pocket watches and, later, wristwatches. In 1890, its familiar eight-pointed star trademark took on the distinctive form still recognised today. Alongside mechanical horology, Junghans began exploring electrical drives at an early stage. From around 1930, it produced electric pendulum clocks in cooperation with the French company ATO. During the Second World War, Junghans was involved in German armaments production. Its factories manufactured ammunition fuses, among other products, and used forced labourers and prisoners of war. Civilian clock and watch production resumed as early as 1946. The Nuremberg-based Diehl Group acquired Junghans in 1956. The company remained an important manufacturer of mechanical large clocks while developing new technologies. In 1971, it introduced the Astro-Quarz, its first German quartz wristwatch. Over the following decades, development increasingly focused on electronic timekeeping. A radio-controlled table clock appeared in 1986, followed in 1990 by the MEGA 1, the world's first radio-controlled wristwatch. After several changes of ownership and an insolvency in 2008, Schramberg entrepreneurs Hans-Jochem and Hannes Steim took over the clock and watch business in 2009. The Junghans brand continues at its historic Schramberg location. Since 2018, the listed Terrassenbau, a former production building dating from 1917–1918, has housed a museum devoted to the history of clock and watchmaking.