Insta-Line Quantum LED: Sloan Letter "Insta-Line" Chart - (10ft/3m)

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A Sloan Letter Insta-Line chart with linear-spaced optotypes in the following size equivalents: 20/50, 20/40, 20/30, and 20/20. Features 2 lines of each size with 3 optotypes on ea ch line. Dimensions: 9" x 14" (22.9 cm x 35.6 cm). This chart can be purchased individually, with an RCD overlay or you can purchase the RCD Overlay by itself. Show more