10 ft: KCRHN (9 Line) Chart Promo This poster is a visual

This poster is a visual explanation of what heart conditions are and what they can do to the human body

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

More powerful

When faced with an emergency

10 ft: KCRHN (9 Line) Chart Promo This poster is a visual(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.