Noseclip, plastic, foam-padded noseclips help increase the accuracy of spirometry results by eliminating the escape of air through the nostrils during testing
Snap Circuits * Motion, contains over 50 parts and over 165 projects to complete, hands-on education, Experiments include: Color changing lighted fan, Air fountain, Motion Detector, Master Dimension(LxWxH): 21.5 x 14.25 x 19.25 inch, Master Weight: 22lbs