Distance Traditional Numbers 20 Ft. Chart119410
A traditional Distance Numbers Chart with line sizes from 20/100 to 20/10. The top line is for testing at 200ft (61M). Shows Snellen/Sloan Letter Numbers in Feet and M notation.
Dimensions: 11" x 24" (27.5 cm x 60 cm).
Testing distance: 20 feet/6 meters.