Figure 41. Current meter and recording device invented by Kohei Ono in 1950.Above: Picture of the unit. Below: the recording mechanism. This instrumentwas built by the Ogawa Seiki Company, Ltd., of Tokyo.
4/4/2019 1:56:29 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments