A manual stacker, also known as a manual lift or hand stacker, is a type of material handling equipment that is designed for lifting and transporting heavy loads in a vertical direction using manual power. It consists of a platform that is mounted on a vertical mast, which can be raised and lowered using a manual hydraulic pump or a hand-crank mechanism.

The platform of a manual stacker is typically made of durable materials such as steel and can have a weight capacity of up to several thousand pounds, depending on the model. It is equipped with wheels and handles for easy maneuverability, and the lift mechanism is operated by a worker using a hydraulic pump or a hand-crank.

A manual stacker is an ideal tool for lifting and transporting heavy loads in a warehouse or other industrial setting where electricity is not available or feasible. It can be used to stack pallets, move materials to higher storage areas, and position materials at a comfortable working height for workers.

When using a manual stacker, it's important to follow proper safety procedures to prevent injury or damage to the load. This includes ensuring that the load is securely placed on the platform, using proper lifting techniques, and avoiding overloading the manual stacker beyond its maximum load capacity.

Overall, a manual stacker is a versatile and affordable tool for businesses that require lifting and transporting heavy loads in a vertical direction. It can help improve efficiency and productivity in the workplace, as well as reduce the risk of injury to workers and damage to the load.