SONIC
Electronic Measuring Instruments-Namely, Flaw and Thickness Testers [, Digital Thickness Gauges and Ultrasonic Transducers ] Used for the Detection of Flaws in the Manufacture of Plates, Bars, Forgings, Castings, Extrusions, and Similar Items, in the Field, Laboratory or on a Production Line
Cancelled · March 17, 1980 · 73254334 ·