What is the purpose of a rail wheel profile gauge?

The purpose of a rail wheel profile gauge is to measure the shape and dimensions of train wheels. This tool is crucial for ensuring that the wheels conform to specific standards and specifications, which is essential for safe operation. Wheels must have the correct profile to maintain proper contact with the rails, prevent derailment, and ensure smooth operation of the train. Regular measurement using a profile gauge helps in monitoring wear and tear, allowing for timely maintenance or replacement of wheels that no longer meet safety requirements. Properly shaped and dimensioned wheels also contribute to the overall efficiency and stability of train operations.