LEA SYMBOLS® Pocket Box Stick
The LEA SYMBOLS® Linear Pocket Box Stick shows 20/125, 20/100, 20/80, 20/60, 20/50, 20/40, 20/30, and 20/20 lines. The proportional stick shows 20/250, 20/200, 20/160, 20/63, 20/50, 20/40, and 20/32. Each stick is 9/16" (1.4 cm) square and 4.5" (11.5 cm) long with fixation targets on each end. Available in either proportionally-spaced or linear-spaced optotypes.
Testing distance: 16"/40 cm.