Chart(Distance): ESV1200™ and ESV1500™ - Snellen Letter Linear-spaced with Red and Green Bars (20ft/6m)

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A Snellen Letter linear-spaced distance chart with line sizes that range from 20/100 to 20/16. This chart can either be wall mounted or used in an ESV1200™, ESV1500™, or a Model A+ illuminated cabinet. Lines are labeled with 20 ft notations only. Show more