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ITEM# 66081
Colenbrander Reading Card
$33.50
Near Vision, Standard Contrast (9" x 7") Designed as a simple test.
The usual question for a reading test is: What is the smallest (black) line you can read? On the contrast card one adds the question: What is the smallest (grey) line you can read? The difference between the two measurements will be obvious and can simply be expressed in lines.
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