10 ft: SZN (11 Line) Chart Housebrand With precision components and a

With precision components and a user-friendly design

or written

auditory ossicles

Guides the user step-by-step through the rescue process with audio and visual prompts

10 ft: SZN (11 Line) Chart Housebrand With precision components and a(9" x 14") Sloan optotype chart for vision testing at 10 feet. Features two smaller groups 10 20 to 10 8 for repetitive eyesight testing (20 40 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.