Description
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Proportionally spaced (logMAR) lines; line sizes
range from 20/200 to 20/8 (6/60 to 6/2.4)
equivalent, 0.10 to 2.50. 18" x 18" (45.7 cm x
45.7 cm); folds to 18" x 9" (45.7 cm x 22.9 cm).
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 735000