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LEA GRATINGS® ACUITY TEST, 52089
The Symbol :
251300
LEA GRATINGS® ACUITY TEST , 52089 A Resolving/Discrimination Test
Kolor/Wzór
999.00
| Delivery time to | 20 days |
| Shipping price | The Lack Of |
| The Availability Of |
na zamówienie
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| EAN | |
Zamówienie telefoniczne: 22 651 82 85
A Resolving/Discrimination Test
This test at full contrast requires discrimination of the direction of long lines, which is a more demanding task than the detection acuity measured with the LEA GRATINGS® Acuity Test. The test gratings are presented to children and adults at different distances to determine at which distance the direction of lines can be perceived. Knowing the distance and which grating was used, the grating acuity values can be read from the nomograms. Includes nomograms, instructions, a storage case, and 4 disks.
Dimensions: 8" (20 cm) in diameter.
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