Which of the following is a stacker control device?

The stacker control device is designed to allow the operator to maneuver and control the movement of a stacker in a warehouse or distribution setting effectively. The correct answer, the diversion steering wheel, serves as an essential component for directing the movement of the stacker.

In the operation of a stacker, the steering wheel provides the operator with the necessary control to navigate narrow aisles, turn corners, and position the load accurately for stacking or unstacking items. Proper maneuverability is crucial for efficiency and safety in operations that involve lifting and transporting materials.

Considering the other options, the brake lever is primarily used to stop the equipment, which is essential for safety but does not control its movement. The wheels are fundamental for the mobility of the stacker, allowing it to roll, but they do not provide directional control. The differential facilitates smooth wheel movement and turning but does not act as a direct control device for the operator. Thus, the diversion steering wheel stands out as the primary control mechanism for operating a stacker effectively.