| ||
|
| Stresstel Corp. | |
| Roop Telsonic Ultrasonix Ltd. | ||
| Panametrics | ||
| UE Systems | ||
| Votum JSC | ||
| NDT International | ||
| Ashtead Technology Rentals | ||
| Matec Instrument Companies, Inc. | ||
| Phoenix Inspection Systems Ltd. | ||
| UXR | ||
| CyberScan Technologies, Inc. | ||
| NKK Micro Devices | ||
| TSI Incorporated | ||
| A&D Company | ||
| Dakota Ultrasonics 1650B Mansfield Street - Santa Cruz, CA 95062 USA - - | ||
| Sonatest Plc, Inc. | ||
| Nova Technology, Inc. - - - | ||
| ||