Top Notch EDM Services designs and manufactures ultrasonic testing (UT) reference standards, calibrations blocks, custom welded flaw samples and performance demonstration blocks. Our team blends precision machining and welding skills with extensive non-destructive testing (NDT) experience and expertise. Our unique combination of subject-matter expertise and state-of-the-art machining and welding capabilities allows us a complete understanding of the products and services we provide, meeting the high standards of our clients.