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STRETCH ROLL / Elastic tube


STRETCH ROLL is kind of elastic tubing which replace elastic of tube with constant force spring. Constant force spring provide equivalent strength continuously (e.g., tape measure).
The spring make the equipment storage easily because it rolls back the nylon
rope in the plastic ball without pulling.
In plastic ball of STRETCH ROLL, there are length recorder and Bluetooth chip for recording the stretch length and transmitting the data to cell phone.


University of Taipei

University of Taipei
Taipei, Taiwan

Guan-Yun Chen,
University of Taipei