Product Number - 600727
Linear-spaced lines; line sizes range from 20/100 to 20/16. Lines are labeled with 20 notations only. This chart can be used in Good-Lites illuminated ESV1200, ESV1500, Model A, Model A cabinet or hung on the wall.
Chart size is 9" x 14" (22.9 cm x 35.6 cm)
20 feet, 6 meters testing distance.