- A G Davis Gage & Engineering
- Advanced Inspection & Msrmnt
- Anderson Separator
- Arnold Gauge Co Inc
- Ashcroft-Wilka-Marsh-Trend
- Automation & Metrology Inc
- B C Ames Inc
- Beede Electrical Instrument
- Bellofram Corp
- Brunswick Instrument Inc
- Brunswick Instrument Inc
- Butterworth's Auto Tags
- Carter Chambers
- Chippewa Tool & Gage
- DIGIT Inc
- Dwyer Instruments Inc
- Euro-Tech Corp
- Express Gage Inc
- Federal Products Corp
- G B Instruments Inc
- Gage Assembly Co
- Gage Assembly Co
- GAL Gage Co
- Gretna Gage & Engineering
- Hy-Tech Instruments Inc
- Indi-Square Co Inc
- ISE Of Tx Inc
- ISE Of Tx Inc
- Joh-Mar Co
- K Connelly Corp
- Kershaw Instrumentation Inc
- Kolva Custom Gauge Co
- Lawson-Hall Laboratories
- Liberty Tool Inc
- Mahr Federal Inc
- Moyer Process & Control Inc
- Mueller Gages Co
- Noshok
- Orange Research Inc
- PAR Tool & Gage Co
- Pennoyer-Dodge Co
- Pneumercator Co
- Preferred Machine Tools
- Probity Engineering Svc LLC
- QAE Inc
- Quality Control Solutions Inc
- S & S Tool & Machine Co
- Sandy Webb's Bookkeeping Svc
- Sensordata Technologies Inc
- Sjostrom Industries
- Thomas G Faria Corp
- TLA Inc
- Total Tooling Concepts Inc
- United Tool Supply
- Vermont Thread Gage
- Williams-Collins Inc
- Winters Thermo Gauges
