Stereo Butterfly Test
Product Ref: STE-BUT
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Stereo Butterfly Test with Polarised Spectacles
The Stereo Butterfly tests and evaluates random dot stereo depth perception for both gross stereopsis (2500 to 1200 seconds of arc) and finer depth perception. The figures present on the test cannot be identified without viewing glasses.
FEATURES INCLUDE:
- Graded circle test (800 to 40 seconds of arc)
- Animal test for children (400 to 100 seconds of arc)
Test includes:
- 1 pair of Standard 3-D Viewers
- Answer key on back cover
Accessories and other items can also be purchased by phone if you prefer. To make a telephone order, or to discuss any item purchase please call 01438 740823.