HOTV Linear-spaced Distance Chart Sku(s): 600017 (Set), 600717 (Chart Only) Description: HOTV optotypes in linear-spaced lines; line sizes range from 20/100 to 20/16 equivalent. Set includes chart, response key, flash cards, and instructions. This chart can either be wall mounted or used in an ESV1200, ESV1500, or a Model A+ illuminated cabinet. Chart size is 9"x14" (22.9 cm x 35.6 cm). 10 feet, 3 meter testing distance. Chart Set includes response key and instructions along with the chart.