Was Berth and Neumann a subsidiary or competitor of Carl Zeiss?

Berth and Neumann was a competitor of Carl Zeiss. Founded in the late 19th century, Berth and Neumann specialized in optical instruments, including microscopes, which placed them in direct competition with Zeiss, a leading manufacturer in the same field. While both companies were prominent in optical technology, they operated independently and sought to establish their own market presence.