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LEA NUMBERS® – Low Contrast ring binder, mixed 52075A, układ mieszany






541.00
The quantity in the package | 1 opak |
Shipping within | 48H |
Shipping price | The Lack Of |
The Availability Of |
dostępny
|
The Weight Of The | 0.25 kg |
The bar code | |
EAN |
Zamówienie telefoniczne: 22 651 82 85
Now it's easy to measure, record and detect changes in the transfer of visual information when the change only affects visual acuity at low contrast levels. Chart presents numbers at the following contrast levels: black, 25%, 10%, 5%, 2.5%, and 1.25%. Pages are offset for easy flipping. Each chart includes recording forms and instructions. 6 pages, 3.25" x 9" (8.25 cm x 22.9 cm).
Przykładowe przeprowadzenie badania : https://www.good-lite.com/instructions/270500.cfm
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