United Scientific WDSET1 Wave Demonstrator Set with Two Helical Springs and Cotton String

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United Scientific Supply WAVE DEMONSTRATOR SPRING SET (BOTH SPRINGS AND COTTON STRING) - USS Set includes two helical springs. The long, narrow spring measures 3/4" x 72", and can be extended to 5 meters. The larger spring measures 3" x 4", and can be extended many times its length without distortion. Includes activity guide.Product Dimensions (L x W x H): 272 x 163 x 124 MMProduct Weight: 1 LB Show more