Pneumatic Stool with Foot Ring Color:Fawn • Evaluate both gross stereopsis

• Evaluate both gross stereopsis (355 to 700 seconds of arc) and fine depth perception

Manufacturer Part Number: 28200

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

-Optional charging adapter allows the handle to be charged in a desk charger or stand console

*For models 2010 & newer

Pneumatic Stool with Foot Ring Color:Fawn • Evaluate both gross stereopsisManufacturer Part Number: 11001FR D Traditional Pneumatic Stools Designed for Comfort. Comfortable 16 wide, 4 thick poly foam seat cushion Easy to use, chrome pneumatic height adjustment Height Adjustment: 20" 27. 5" Color Chart