A Magnetic Thickness Gauge is a device used to measure the thickness of non-magnetic coatings on ferromagnetic substrates, such as steel. It operates on the principle of magnetism, where the gauge detects the strength of the magnetic field to determine the thickness of the coating. This tool is commonly used in industries like automotive and manufacturing to ensure quality control and compliance with safety standards. These gauges are portable and easy to use, making them ideal for fieldwork. They can measure various coatings, including paint, powder, and galvanization. The results help assess corrosion protection and overall material integrity, contributing to maintenance and inspection processes.