The machine in the image is a TOHO HSZ-2 Chain Block, which is a manual portable lifting device.What is a Chain Block?A chain block (also known as a manual chain hoist or chain pulley block) is a mechanical system designed to lift and lower heavy loads vertically by multiplying manual force. It uses a system of internal gears and chains to provide a mechanical advantage, allowing an operator to lift significant weights with relatively little physical effort.Natural DescriptionOperating Mechanism: It is operated by pulling a hand chain, which rotates a series of internal gears. This movement raises or lowers the load attached to the stronger lifting chain.Capacity: This specific unit (Model HSZ-2) has a maximum lifting capacity of 2 tons and a standard lifting height of 3 meters.