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Walman Instruments
Stereo Randot
Brand: walman
Condition: New
Tests the ability to identify six geometric forms from random dot backgrounds. Figures cannot be identified without glasses to discourage guessing. 500 to 20 sec of ARC.
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Tests the ability to identify six geometric forms from random dot backgrounds. Figures cannot be identified without glasses to discourage guessing. 500 to 20 sec of ARC.