French Sloan Letter Pocket Card
A French Sloan Letter Pocket Card with line sizes of 20/400 to 20/10 equivalent on one side. The continuous French text is printed on the reverse side with line sizes from 20/80 to 20/16.
Dimensions: 3.75" x 6.25" (9.5 cm x 15.9 cm).
Testing distance: 16"/40cm.