73271538
Jul 24, 1980
Jan 5, 1982
Electronic Measuring Instruments-Namely, Flaw and Thickness Testers, Digital Thickness Gauges, Ultrasonic Transducers Used for the Detection of Flaws in the Manufacture of Plates, Bars, Forgings, Castings, and Extrusions in the Laboratory or on a Production Line
Electrical and Scientific Apparatus