Grafco Ishihara Test Chart Book, for Color Deficiency, 14 Plate Book, 1/Ea, GHF1254

Grafco Ishihara Test Chart Book, for Color Deficiency, 14 Plate Book, 1/Ea, GHF1254
Grafco Ishihara Test Chart Book, for Color Deficiency, 14 Plate Book, 1/Ea, GHF1254 Detail
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Grafco Ishihara Test Chart Book, for Color Deficiency, 14 Plate Book, 1/Ea, GHF1254 Description

Test Chart Books Features: Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete. Includes four special plates for tests to determine the kind and degree of defect in color vision. Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green. Consist of a number of colored plates. On each plate is printe…

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Tags: Grafco, Ishihara, Test, Chart, Book,, for, Color, Deficiency,, 14, Plate, Book,, 1/Ea,, GHF1254
Grafco Ishihara Test Chart Book, for Color Deficiency, 14 Plate Book, 1/Ea, GHF1254

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