10 ft: KCRHN (9 Line) Chart Promo Safe: Patient safety is improved

Safe:  Patient safety is improved thanks to an interchangeable probe well that reduces the risk of cross-contamination

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Runs on 6 AA batteries (included) or optional A/C adapter

10 ft: KCRHN (9 Line) Chart Promo Safe: Patient safety is improved(9" x 14") Sloan optotype chart for vision testing at 10 feet. Features two smaller groups 10 25 to 20 8 for repetitive eyesight testing (20 50 to 20 16 equivalent). 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.