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Effective October 1, 2022

Bay City Scale has joined the Michelli Weighing & Measurement team

Michelli Weighing & Measurement location map

Notice of Ownership Change

We are pleased to announce that effective October 1, 2022  Michelli Measurement Group, Inc. (“MMG”) has acquired Bay City Scale, Inc. (“BCS”) located in Hayward, CA.  

Bringing together both companies is an exciting event for our employees and our customers.  Our greatest assets have always been our people, and by joining forces we have strengthened the quality of that asset.  Our merger will increase our local presence and ability to serve our customers.  

We look forward to continuing to serve you with the same dedicated employees, plus the larger Michelli Weighing & Measurement team.  All existing employees of BSC have joined MMG.  Bolton Rothwell will continue in the role of Manager of the Bay Area service & sales teams at the current Hayward, CA office.  

Since 1947, the Michelli Weighing & Measurement companies have served the Weighing & Measurement Industry, now with thirty (30) locations throughout the US.  Michelli Weighing & Measurement is ISO 9001 certified, and our calibration labs are IEC/ISO 17025 accredited. This allows us to provide accredited calibration for equipment & precision measurement instruments used in weighing, force, torque, pressure, dimensional, electrical, temperature & frequency measurement.

 Please contact our friendly team of experts with service requests or questions at (800) 903-8823 or [email protected]

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Michelli Weighing & Measurement 75 Years Strong Logo


Michelli Weighing & Measurement is your comprehensive solution for scale service, equipment maintenance & calibration

All Michelli test weights are certified, and we are ISO 9001 registered & ISO 17025 accredited.

With a fleet of heavy capacity test trucks that meet or exceed all requirements, we provide the most comprehensive service network in the United States.


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Michelli Weighing & Measurement technician uses a remote to lower test weights onto test cart to perform preventative maintenance on scale

Preventative Maintenance

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Michelli Weighing System in plant

Weighing Systems

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Michelli Weighing & Measurement technician performs a truck scale installation


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Michelli Weighing & Measurement technician performs a scale repair

Equipment Repair

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Michelli Weighing & Measurement technician applies a certified scale sticker after scale inspection

Inspections & Certifications

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About Us

ISO 17025 Accredited Calibration Labs

Michelli Weighing & Measurement offers both standard & ISO 17025 accredited calibration services on a wide range of weighing & measurement equipment.

Comprehensive Weighing & Measurement Equipment Solution

From equipment repairs to rentals, the Michelli team can help. Our product specialists & service experts help you get the equipment you need & keep it in great working order.

30 Locations in 11 States

With calibration labs throughout the Southern & Western United States, the Michelli team is always nearby and ready to help with equipment ranging from heavy duty scales to precision measurement devices.

Contact us today for weighing & measurement equipment sales, service, calibration or repair

Harahan, LA Calibration Lab

130 Brookhollow Esplanade
Harahan, LA 70123
(504) 733-9822
[email protected]

Serving the greater New Orleans area

Baton Rouge, LA Calibration Lab

Monroe, LA Calibration Lab

Sulphur, LA Calibration Lab

2234 Industrial Drive, Suite D
Sulphur, LA 70665

(337) 882-5115
[email protected]

Serving the entire Lake Charles area

Bossier City, LA Calibration Lab

4711 Viking Drive
Bossier City, LA 71111

(318) 747-9730
[email protected]

Serving the entire Shreveport area

Scott, LA Calibration Lab

103 North Pat Street, Suite H
Scott, LA 70583

(337) 484-1304
[email protected]

Serving the entire Lafayette area

Texarkana, AR Calibration Lab

Alexander, AR Calibration Lab

Springdale, AR Calibration Lab

Jackson, MS Calibration Lab

Olive Branch, MS Calibration Lab

Columbia, MS Calibration Lab

New Albany, MS Calibration Lab

New Albany, MS
(662) 760-1364
[email protected]

Greenwood, MS Calibration Lab

Greenwood, MS
(662) 453-7711
[email protected]

Mobile, AL Calibration Lab

Alabaster, AL Calibration Lab

2014 Fulton Springs Road
Alabaster, AL 35007

(205) 621-3151
[email protected]

Serving the entire Birmingham area

Nashville, TN Calibration Lab

Houston, TX Calibration Lab

Las Vegas, NV Calibration Lab

(800) 903-8823

[email protected]

Reno, NV Calibration Lab

(800) 903-8823

[email protected]

Beaverton, OR Calibration Lab

Kent, WA Calibration Lab

7031 South 196th Street, Suite 1-3
Kent, WA 98032

(800) 903-8823
[email protected]

Serving the entire Seattle area

Phoenix, AZ Calibration Lab

Santa Fe Springs, CA Calibration Lab

10751 Forest Street
Santa Fe Springs, CA 90670

(562) 903-1669
[email protected]

Serving the entire Los Angeles area

Stockton, CA Calibration Lab

Hayward, CA Calibration Lab

25352-A Cypress Ave.
Hayward, CA 94544

(800) 903-8823
[email protected]

Serving the entire Bay Area

Fresno, CA Calibration Lab

Chula Vista, CA Calibration Lab

2256 Main Street, #18
Chula Vista, CA 91911

(619) 240-3613
[email protected]

Serving the San Diego & Imperial County areas

Bakersfield, CA Calibration Lab