Proportionally spaced lines, line sizes 20/100, 20/80, 20/63, 20/50, 20/40, 20/32, 20/25, 20/20, 20/16,  20/12.5, to 20/10 to 20/8 (6/30 to 6/2.4) equivalent with repetitive left eye and right eye groups.  

255100- Set includes response key, flash cards and instructions.  Chart is 9” x 14” (23 cm x 36 cm) and fits Quantum Series Cabinet or can be hung on the wall.  

255100, 255101.