Eisco Wave Form Helix, Slinky, Coil diameter 75mm
- Eisco PH0708A, A flat-section steel wire helical coil, suitable for use in the study of sound & wave propagation in the physics lab
- or simply for having fun at home with a classic spring toy. Eisco Wave Form Helix, Slinky, Coil diameter 7.5 cm Length Closed 10cm