Stereo Fly SO-001 from Stereo Optical Company, Inc.

The Standard for Stereo Depth Perception. Test and Evaluate Both Gross (2500 to 1200 sec or arc) and Fine Depth Perception.

The Test Includes:

Graded Circle Test (800 to 40 sec of arc)

Animal Test for Children (400 to 100 sec of arc)

1 Pair of Standard 3-D Viewers