- A D Instrument Repair Inc
- Active Endeavors
- AIW Inc
- Blake Division Of Components
- Branom Instruments
- Chadwick Instrument Svc
- Deltatrak Inc
- Dia Nielsen USA Inc
- E-Beam Service
- Estasy Recording Studios
- Foxboro Co
- GLW Enterprises Inc
- GLW Enterprises Inc
- Graphic Controls
- GSI Group Inc
- Heim Data System Inc
- Honeywell International
- Illahee
- Instrument Specialists Inc
- Instrument Specialists Inc
- Invensys Process Systems
- J & W Instrument Inc
- Linseis Inc
- Mayday Communications
- Mercury Instruments Inc
- Mercury Instruments Inc
- Nice Systems
- Nice Systems
- Pace Scientific Inc
- PFT-Instrument Alexander Svc
- Pioneer Inc
- Process Control Svc
- Temperature Controls Inc
- Valley Instrument Svc
