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20 ft: COH (9 Line) Chart
20 ft: COH (9 Line) Chart

20 ft: COH (9 Line) Chart

Your Price: $23.50
(9" x 14") Sloan optotype chart for vision testing at 20 feet. Features two smaller groups 20/25 to 20/12.5 for repetitive eye testing. May be wall mounted or used with illuminated cabinets (66003, 66004, 66016, 66090).
Item Number: 662197
Availability:
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.

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