| ||
| Simpson Electric |   |
Hubbell / Hipotronics |   | |
A. W. Sperry |   | |
Vitrek Corporation |   | |
Instek |   | |
Associated Research Inc. |   | |
GMC Instruments, Inc. |   | |
Extech Instruments |   | |
PJ Electronics Inc. |   | |
QuadTech Inc. |   | |
Aemc Instruments/cchauvin Arnoux, Inc. |   | |
|