- Abbott Atlantic Inc
- Actaris Metering Systems
- Automation Inc
- Button King
- Button Oil Co Inc
- Buttons & Bows
- Crompton Instruments
- Duncan Parking Technologies
- Dynamic Fluid Measurement Inc
- ENM Co
- ENM Co
- Fargo Controls Inc
- Flow Systems Inc
- Fournier Associates Inc
- Goodrich Corp
- Gretna Products Co
- Gretna Products Co
- Hersey Meters
- Hoffer Flow Controls Inc
- Hunts Industries Inc
- K-Hill Signal Co
- Kaydon Corp
- Liquid Controls Inc
- MFIC Corp
- Microfluidics Corp
- Microfluidics Corp
- Morgan Precision Instruments
- Omni Flow Computers Inc
- POM Inc
- Progressive International
- R A Precision Inc
- Redington Counters Inc
- S K & P Industries Inc
- Time Mark Inc
