Pathfinders Hydraulic Machines 4-in-1 Wooden Kit (Cherry Picker, Platform Lifter, Excavator, Scissor Lift)
The simple machine series is designed to introduce hydraulics and simple machines in a hands-on manner. The models in this 4 in 1 multipack teach children about howl ever and linkages work. Once made, the models may inspire kids to design machines of their own, and make connections with the engineering of the full sized machines we see on building sites.