Proportionally Spaced logMAR Sloan Letters Chart
This adult and children distance chart is the same as the 600705 Sloan Letters Chart, but the lines are labeled with only 10' and 20' notations. Proportionally-spaced lines; line sizes range from 20/160 to 20/10 (6/48 to 6/3) equivalent. This chart can either be wall mounted or used in an ESV1200, ESV1500, or a Model A+ illuminated cabinet. Chart size is 9" x 14" (22.9 cm x 35.6 cm)
10 feet, 3 meters testing distance.