These Motion Detector Clamps screw into the back of the Vernier Motion Detector, which allows them to then be clamped onto a variety of objects such as table tops, ring stands, etc.
SIUE STEM Resource Center
http://www.siuestemcenter.org/
Southern Illinois University Edwardsvillehttp://www.siuestemcenter.org/
Science East, Room 1276
Edwardsville, IL, 62026
USA
618-650-3065