1. B&K Precision Corporation
2. Fluke Corporation
3. HIOKI E.E. CORPORATION
4. HT Italia S.r.l.
5. Keysight Technologies
6. Klein Tools Inc.
7. KYORITSU ELECTRICAL INSTRUMENTS WORKS
LTD.
8. Mastech Group
9. NATIONAL INSTRUMENTS CORP.
10. Rohde & Schwarz
11. Sanwa Electric Instrument Co. Ltd.
12. SM Systems Group
13. TEKTRONIX Inc.
14. Teledyne FLIR LLC
15. Teledyne Technologies
16. Yokogawa Test & Measurement Corporation