LEA GRATINGS® a Preferential Looking Test253300
LEA GRATINGS® are for preferential looking test situations with infants or children and adults with disabilities to determine detection acuity. Grating levels printed on each handle are: 0.25, 0.5, 1.0, 2.0, 4.0 and 8.0 cpcm (cycles per centimeter of surface). Includes instructions, a storage case, and 4 paddles.
Dimensions: Width: 7.75" x 12.5" (19.685 cm x 31.75 cm).