Sloan Letter Proportional Spaced Translucent Chart 66CM
756333A chart used for intermediate distance testing. This chart has Sloan Letters in an ETDRS format with proportionally spaced (logMAR) lines; line sizes range from 20/400 to 20/10 (6/120 to 6/3) equivalent, 0.05 to 2.00. This chart can either be wall mounted or used in an ESV1200, ESV1500, or a Model A+ illuminated cabinet.
Dimensions: 9" x 14" (22.9 cm x 35.6 cm).
Testing distance: 66cm.