Tumbling E Insta-Line Chart
Linear-spaced optotypes in the following size equivalents: 20/80, 20/60, 20/50, 20/40 (2 groups of 3 each line size), 20/30 and, 20/20. 4 lines of ease size with 3 optotypes on each line. Includes chart and switch box overlay. This test set is included with 915000 Complete LED Insta-Line Quantum. 9" x 14" (22.9 cm x 35.6 cm).