Nikon began as Nippon Kogaku K.K. (Japan Optical Industries Co., Ltd.) on July 25, 1917, at 120 Haramachi, Koishikawa-ku (present-day Hakusan 4-chome, Bunkyo-ku) in Tokyo, starting domestic production of optical instruments such as rangefinders and microscopes. This was the first of Nikon's many steps that now span a century. During that era, the production of advanced optical instruments was a matter of national urgency for Japan. Entrusted with this objective was Koyata Iwasaki, the president of the Mitsubishi and nephew of Mitsubishi founder Yataro Iwasaki.