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Do not base your order on the picture presented.
Tumbling E distance chart with wide-spaced lines; line sizes range from 20/100 to 20/16 equivalent. Lines are labeled with 10' and 20' notations only. This chart can be used in Good-Lite's illuminated ESV1200, ESV1500, Model A+, Model A cabinet or hung on the wall. Chart size is 9" x 14" (22.9 cm x 35.6 cm).
This chart is recommended by the Texas Department of Public Health for vision testing and screening.
10 feet, 3 meters testing distance.