Which device allows for easier horizontal movement of heavy objects?

The device that allows for easier horizontal movement of heavy objects is air casters. Air casters operate by using a cushion of air that lifts the object off the ground, reducing friction and enabling smooth and effortless movement on a flat surface. This is particularly advantageous for moving heavy loads across a factory floor or warehouse, as they can glide over surfaces with minimal resistance.

While pallet jacks and forklifts are also used for moving heavy objects, they usually lift the loads vertically and are better suited for transporting materials over uneven surfaces or for loading/unloading. Hoists are designed primarily for lifting items vertically, which does not cater to horizontal movement effectively. Air casters excel in facilitating both the ease of movement and the ability to maneuver heavy loads with precision and control in a horizontal plane.