Good-Lite 257000

Lea Symbols 15 Line Distance Chart Good-Lite Part Number: 257000 For screening/testing children ages 4 years and up. Proportionally-spaced lines line sizes range from 20/200 to 20/8 (6/60 to 6/2.4) equivalent. 50% spaced rectangle (Massachusetts Visual Acuity Test format) with line sizes from 20/100 to 20/8 (6/30 to 6/2.4) equivalent. Has a hole for hanging the chart on the wall. Includes response key flash cards and instructions. 17 x 21 (43 cm x 53.4 cm).10 feet 3 meters testing distance