An ETDRS chart with Tumbling E and proportionally spaced (logMAR) line size ranging from 5/50 to 5/2.5 (4/40 to 4/2) equivalent, 0.10 to 2.00. The other equivalents featured on this chart are letter size, 6 meter, and LogMAR.
Dimensions: Height 22" x Width 22" (55.88 cm x 55.88 cm).
Testing distance: 13.12 - 16.4 feet/4 - 5 meters.