Sloan Letter Proportionally Spaced Distance Chart800735
A Sloan Letter distance eye chart with proportionally spaced (logMAR) lines; line sizes range from 20/160 to 20/8 (6/48 to 6/2.4) equivalent. This chart can be used in an illuminated ESV1018 or hung on the wall.
Dimensions: 10" x 18" (25.4 cm x 45.7 cm).
10 feet/3 meters testing distance.