The Holiday detectors are the devices, required to review metallic surface and stationary equipment. In this way, they safeguard structural integrity and are accessible with the corrosion prevention efforts. The provided detectors are commonly needed to evaluate the rate of untimely coating failures. Holiday detectors are also needed for the inspection of pipelines, metallic surfaces and processing plant equipment. Also, these are needed to evaluate different physical properties such as cracks, protective coating thickness, and moisture concentrations, etc. The longevity of the coating systems can be ensured with the provided gauges. These are proffered with a highly functional life and enhanced productivity.