A new spin on an old classic, this inventive apparatus consists of a cylinder that holds a weight hanger on the back where you can place slotted masses. The cylinder holds the masses in place, while the movable guide provides improved accuracy over the traditional mirrored scale and wire arm. For versatility, a movable outer ring features a millimeter scale that can be adjusted to meet the needs of many different experiments. Three springs of different constants are also included. Slotted masses not included. Size: 15cm L x 15cm W x 30.5cm H.
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