Simple Machines Screw

https://www.teacherdirect.com/web/image/product.template/67074/image_1920?unique=997708a
505 CTU 505 CTU 895452001343

19.88 19.88 19.88 USD

19.99

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    The screw, another of the simple machines, converts a circular motion (the turning of the screw) into a linear motion. It also lets you amplify the force a great deal, since turning the screw only moves the end of the screw a small amount. This classic wooden model offers children a basic concept of the laws of physics. Desktop sized.