American Scientific Long Metal Coil Spring - Extends to 30 feet
This lengthy metal coil spring is ideal for visually demonstrating wave properties, such as frequency, wavelength, and interference, in the classroom. Can be used in a variety of experiments, and provides a hands-on teaching tool that students always seem to enjoy. Extends to thirty feet in length, measures about 6.5" fully coiled. Also makes a great gift for anyone who was or is a fan of the smaller toy version we all know from our childhoods.Features of American Scientific Long Metal Coil Spring - Extends to 30 feet
Metal coil perfect for classroom demonstrations of wave properties Great for many experiments, hands-on, a student favorite 6.5" fully coiled, 30

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This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.