PH0708A Helical Wave Form

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The PH0708A Helical Wave form Slinky is excellent for demonstrating wave motion.

*this is not a toy. It is way more awesome than that: it's a scientific instrument.

This is a Wave Form Helix that can be:
1) used as a scientific instrument to measure a wave function (it actually has a higher spring constant than the classic toy); or
2) unleashed down a wicked set of stairs.

Helical coil of flat section is made of tempered steel wire. Coil diameter 7.5cm length. Closed 10cm. Fully extended 3 meters.