Wave Demonstration Set

Item No. 613-0140
Two helical springs: Long spring is 3/4" x 72" and can extend 5 meters. Large spring is 3 x 4". Extends many times its length without distortion. 3 m cotton cord to suspend large spring. Ship weight: 2.5 lb.
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Description

Two helical springs:
Long spring is 3/4" x 72" and can extend 5 meters.
Large spring is 3 x 4". Extends many times its length without distortion.
3 m cotton cord to suspend large spring.
Ship weight: 2.5 lb.

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