10 ft: SZN (11 Line) Chart Housebrand coordinated school health programs

coordinated school health programs

Dual Axle Design – Allows seat height adjustment to hemi level

3 spacious padded compartments

ease of holding and operation

10 ft: SZN (11 Line) Chart Housebrand coordinated school health programs(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.