Sloan Letters Chart

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Linear-spaced optotypes in the following size equivalents: 20/63, 20/50, 20/40, 20/32, 20/25, 20/20, 20/16, and 20/12.5. Two lines of each size with 5 optotypes on each line. Includes chart and switch box overlay. This chart is included with 915000 Complete LED Insta-Line Quantum™. 9" x 14" (22.9 cm x 35.6 cm).

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