DeFelsko Corporation is a U.S. manufacturer specializing in coating thickness gauges and inspection instruments for various industries, including manufacturing, marine, aerospace, and petrochemical. They are known for designing and producing simple, durable, and accurate gauges since 1965. DeFelsko has pioneered technologies like the first combination ferrous/non-ferrous gauge and the first hand-held ultrasonic coating thickness gauge for non-metal substrates. The company actively participates in organizations such as the American Society for Testing and Materials and ISO to enhance the science of coating inspection. With over 70 models of inspection instruments, DeFelsko offers a wide range of products used globally for diverse applications.