A wide variety of lifting equipment is available for different applications, and the design of a machine is important in determining what it can be used to do. These range from hand-operated objects such as jack stands and wedges, to hydraulic or electric power sources that use hydraulics or electricity to generate force. The most efficient designs can improve productivity by reducing the required number of workers. They also allow access to difficult-to-reach areas without the need for ladders or scaffolding.















