Stereo Fly Test by Stereo Optical

Test book contains circles test (800 – 40 seconds of arc), Animal test (400 – 100 seconds of arc) and stereo fly (3552 seconds of arc).

Stereo Optical Stereo Test books each includes one pair of testing goggles, a vinyl book to hold test plates and an instruction sheet with scoring information. Answer key is found on the back of each book.