Telescope knob for National Crane 900

The telescope knob serves as a manual interface for the operator to manage the extension and retraction of the telescopic boom sections on the crane. By providing direct tactile feedback, it allows for the precise positioning of the boom during lifting operations. This component is integrated into the crane control system to facilitate accurate adjustments when maneuvering loads into specific locations.

This part is specifically engineered for the National Crane 900 truck-mounted crane. It is designed to interface with the existing control linkage to maintain the operational integrity of the telescopic system. Proper functionality of this control interface is necessary for the operator to maintain full command over the boom movement during site activities.

Control knobs of this type are common in heavy machinery to provide a physical connection between the operator and the hydraulic or mechanical systems governing boom geometry. They are typically mounted on the control console to allow for ergonomic access and fine-tuned adjustments during crane operation.