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Test Chart No 3 of Drs Ishihara, Yamamori and Uyama, International, 68th edition
test chart
Bunkyoku Hongo sanchome sanjo nanaban handaya shoten
Asia: Japan, Tokyo
Mid 20th c.
paper; wood; glass
overall: 630 mm x 351 mm; overall (framed): 750 mm x 448 mm

Test letter chart. Fourteen rows of black Japanese characters and international symbols including, on the top line, the Landolt ring, a pair of fish and the character Ku, printed on paper, together with five coloured panels and an astigmatic fan. Float mounted in a modern (2014) bespoke wooden frame, glazed.


Gift of Mr Kohkichi Watanabe, 2014

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