10 ft: SZN (11 Line) Chart Housebrand Visual Acuity range 15 m

Visual Acuity range 15 m to 1

The 2 combing heads allow for use on thick and thin hair and have rounded stainless steel teeth

Dual Axle Design – Allows seat height adjustment to hemi level

if not used

10 ft: SZN (11 Line) Chart Housebrand Visual Acuity range 15 m(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.