Build 12 work models such as a helicopter, a vice, a hand drill, a scissor lift, etc. Includes 16 pages of theory and facts, a 3-page quiz, 6 pages of experimental activities illustrating the uses of gears and endless screw drives, 17 steps-by-step, 3D Rendering Illustrations Illustrated online on the Engino website or using the free downloadable Engino 3D app for Android or Apple iOS. Made at CHYPRE Designed and manufactured in CHYPRE - no battery required
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