What equipment is essential for assessing the proper boom angle during a lift?

The load chart is crucial for assessing the proper boom angle during a lift because it provides specific information about the safe operating parameters of the crane. This includes the relationship between the boom angle, load weight, and the crane's lifting capacity. With the load chart, the operator can determine the right boom angle needed to ensure that the lift is performed safely and within the crane's limits, thus preventing potential accidents or overload situations. It contains essential data that helps operators understand how variations in the boom angle can affect the crane's stability and lifting capabilities.

While the operator's manual, level gauge, and operating controls all have their own important roles in crane operation, the load chart is specifically designed to inform decisions regarding the boom angle in relation to the load being lifted, making it the most critical tool for this assessment.