Non-destructive testing (NDT) and inspection allows you to evaluate the properties of materials, components, or entire infrastructure systems without having to interfere with processes or cause damage. NDT equipment is a necessity across most manufacturer and service oriented industries, including alternative energy, aerospace and defense, communications, transportation, building structure and more. Non-destructive testing does not permanently alter the tested structure or substance, making it highly valuable for troubleshooting, product evaluation, and research purposes. Common methods of non-destructive testing inspection are ultrasonic, radiographic, and magnetic-particle, as well as others. These tests can be applied to weld verification, assessing structural mechanics, and even radiography in medicine.