True or False: A mechanical device called pawling is used to prevent escalator malfunction.

The statement is true because pawling is indeed a mechanical device that plays a critical role in escalator safety and functionality. It is designed to help prevent malfunction by providing a mechanism that can engage or disengage the drive system of the escalator, particularly in situations where there is an overload or abnormal condition. This feature helps ensure that the escalator operates smoothly and prevents potential hazards that could arise from mechanical failures. The presence of pawling demonstrates the emphasis on safety within escalators, making it an essential component of their design and operation.