What type of hand signal includes pointing the thumb down to the side of the body?

The hand signal that involves pointing the thumb down to the side of the body is specifically used to indicate that something should be lowered. This is a standardized gesture in rigging and signaling operations, primarily to ensure clear communication among team members during lifting or lowering tasks. When the thumb is pointed down, it universally conveys the action of lowering the load safely and carefully.

In contrast, other signals, such as those for hoisting or moving slowly, are communicated differently to avoid confusion. For instance, a hoist signal typically involves raising the arm with a different thumb position or gesture, which indicates the opposite action. Understanding these signals is crucial for maintaining safety and efficiency in any construction or heavy equipment operation.