Butterfly Stereo Test Specialty Treatment Lens rotating color LCD screen and

rotating color LCD screen and rechargeable lithium ion battery

this mobile power source is now approximately approx

British manufacturing experience and quality delivering great value

Pre- & post-operative general diagnostic & laser treatment lens for use in sterile

Butterfly Stereo Test Specialty Treatment Lens rotating color LCD screen andManufacturer Part Number: 005 The Stereo Butterfly tests and evaluates random dot stereo depth perception for both gross stereopsis (2500 to 1200 seconds of arc) and fine depth perception. The figures present on the test cannot be identified without viewing glasses. Features: 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