US$ 14.98
Compare to active ingredient of Advil
All pieces are laminated for durability
2 m (20/200 to 20/8 equivalent)
ADA approved
(13"W x 17"H x 8"D)
10 ft: SLOAN (13 Line) Chart Housebrand Compare to active ingredient of(9" x 14") Sloan optotype chart for vision testing at 10 feet. Letter size tests a range from 10 80 to 10 5. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090). The Sloan optotypes were developed on the same basis as Snellen optotypes. Sloan optotypes do not use serifs however, but do use a logarithmic geometric progression.
US$ 14.98
US$ 1417.55
US$ 17.98