1792 - Johann Heinrich August Duncker (1767-1843) began to make optical instruments in Rathenow ġ819 - Duncker's son Eduard (1797-1878) took over the company and began making auricular tubes, then latter expanding to become a successful European manufacturer of spectacles and frames ġ845 - having no children Eduard passed the business on to his nephew Emil Busch (1820-1888) as Optische Industrie-Anstalt, Rathenow ġ852 - Busch began the manufacture of cameras ġ865 - began manufacture of the wide angle Pantoscop lens ġ872 - the Optische Anstalt Rathenow became the stock market company Emil Busch AG worked closely with Zeiss, from which they obtained their optical glass ġ908 - company was renamed Emil Busch AG Optische Industrie from around the same time Busch products were badged ROJA (Rathanower Optische Institute) or Roia ġ929 - Zeiss became a majority share holder and Busch ceased making lenses, but continued making cameras ġ930s - Busch developed the standard 10 x 80, 45 degree offset, binocular used widely in the second world war ġ946 - company became the state-owned Rathenower Optische Werke GmbH and from 1948 VEB Rathenower Optische Werke (ROW), later becoming part of VEB Carl Zeiss Jena. 6x30 Wehrmacht Dienstglas (Busch Rathenow) Very nice 6x30 Wehrmacht Dienstglas in good condition.
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