Build It Yourself! Hydraulic Robotic Arm Thumbs Up 522203

Build your own hydraulic Robotic Arm!; Fun and easy to construct for children and adults alike; this 3 dimensional model is a great demonstration of a hydraulic power system!; The arm function uses some of the same principles that drive real world machines; it can lift small items horizontally and rotate 90?.; Made from die-cut plywood, the frame is precisely cut and can be assembled in 1-2 hours.; Standing at 37cm high, and stretching up to 49cm, the hydraulic arm needs no battery, simply add water to put it to the test!; ; Material: Die- cut plywood ;Frame precisely cut and easy to assemble 90? rotation Demonstrates hydraulic power systems Lifts small items horizontally Age: 8+