About CML Enterprises: Women-Owned Calibration & Process Control Since 1988
A family-run, 100% women-owned business built on calibration expertise, practical service and long customer relationships.
Our story
CML Enterprises Inc. was incorporated in 1988 as a 100% women-owned business specializing in process-control instrumentation, valves, electrical construction materials, and calibration service and repairs. Since 1988 we have defined our success by achieving the highest level of customer satisfaction possible.
Today calibration leads what we do. We invested in high-accuracy, all-in-one Beamex MC6 calibration equipment and Beamex CMX calibration management software so our customers get NIST-traceable results, organized records and a clear view of how their instruments perform over time. Our work at Argonne National Laboratory was featured as a customer success story in Beamex’s Calibration World magazine.
We still bring the strengths of a long-time process-control distributor: product knowledge across valves and instrumentation, in-house diaphragm seal and capillary fill, and supply programs that make life easier for plant purchasing teams. One relationship covers calibration, repair and supply.
Women-owned business (WBE)
CML is a certified women-owned business enterprise. For organizations with supplier-diversity goals, CML offers a WBE source for calibration services, instrument repair and process-control products. Procurement teams can request supplier documentation through sales@cmlenterprisesinc.com.
Where we are
CML has three locations: our headquarters in Antioch, Illinois (Lake County, at the Illinois–Wisconsin line), Bolingbrook, Illinois in Chicago’s southwest suburbs, and Fennville, Michigan in West Michigan. A large part of our customer base is in the Chicago area, alongside plants across northern Illinois, southeast Wisconsin and Michigan. See service areas.
Antioch, IL 60002
Lake County, Illinois — north of Chicago, on the Illinois–Wisconsin state line
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Bolingbrook, IL 60440
Chicago area — southwest suburbs (Will / DuPage counties)
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Fennville, MI 49408
West Michigan
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Who we’ve worked with
- Argonne National Laboratory
- Nestlé Professional Beverages
- Metropolitan Water Reclamation District
- Wastewater treatment plants throughout Illinois, Indiana & Iowa
Meet the team
B2B buyers want a person to call. Here’s who you’ll talk to.
What customers say
“I have dealt with CML Enterprises for many years, and they are my most trusted suppliers of pressure and temperature calibration and certification. We have never had a problem with their work. I have known the Lefley family for over 50 years.”
“CML Enterprises worked with my team to calibrate several unique pressure transmitters at our facility over the course of two days. The transmitters were of varying types and often located in difficult to reach locations. Bob and Rob were extremely helpful throughout the process and completed the work well within the allotted time frame. I’m happy to recommend their services to anyone in the industry, and look forward to continuing our relationship.”
“Over all, I just want to say that Bob and Bobby are excellent people. They really know how to represent CML Enterprises. I highly recommend their calibration services, they are flexible and very reliable. They work hard and they will do anything they can, to get those instruments up and running. Great job I will look forward to work with you next year. Thank you.”
Need instruments calibrated?
Send your instrument list or call Bob. We’ll confirm scope, in-house vs. on-site, and next steps.