10 ft: SLOAN (13 Line) Chart Discontinued this thermometer provides clinically proven

this thermometer provides clinically proven accuracy

The Illiterate Tumbling E optotypes are considered to be the closest to gratings

Suction cup to wall or counter

decontaminating and disinfecting hard surfaces

eye shield and mask

10 ft: SLOAN (13 Line) Chart Discontinued this thermometer provides clinically proven(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.