NDT International, Inc. is the oldest NDT company in the United States, specializing in non-destructive testing instruments since 1971. They offer a wide range of products including coating thickness measurement, flaw detection, corrosion assessment, weld flaw detection, liquid level measurement, vacuum leak detection, and custom transducers. NDT International has a history of developing innovative equipment for NDT applications, such as acoustic monitoring instruments, ultrasonic thickness gauges, flaw detectors, and magnetic wheeled inspection systems. They also provide professional services, consulting, and inspection services to meet various non-destructive testing needs in industries like manufacturing, preventive maintenance, and quality control.