LEA SYMBOLS® Proportional Distance Chart
LEA SYMBOLS® pediatric eye chart with proportionally spaced (logMAR) lines; line sizes range from 20/80 to 20/8 (6/24 to 6/2.4). This chart can be used in Good-Lite's illuminated ESV1018 or hung on the wall. Chart size 10" x 18" (25.4 cm x 45.7 cm).
20 feet, 6 meters testing distance.
Chart Set includes response key, flash cards, and instructions along with the chart.