Facility	City	Industry	Status	Distance
Rheosense INC	San Ramon	Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513	UNVERIFIED	0.3 KM
Gemini Consultants INC	San Ramon	Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 334515	ACTIVE	0.4 KM
Aerotest Operations, INC.	San Ramon	Power Boiler and Heat Exchanger Manufacturing 332410	LIKELY ACTIVE	1.1 KM
Rheosense, INC.	San Ramon	Analytical Laboratory Instrument Manufacturing 334516	ACTIVE	0.9 KM
Alpha Guardian Networks, LLC	San Ramon	Other Communications Equipment Manufacturing 334290	ACTIVE	1.8 KM

Every listed plant in Contra Costa County

Also at this address

No other federal record shares this street address.

Where this record comes from

1 source holds this plant, and 2 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

OSHA injury and illness reportsOPERATING
Record 329106 · first seen DEC 2025 · last seen DEC 2025

IN CONTRA COSTA COUNTY43 other plants share this one’s industry (Navigational, Measuring, Electromedical, and Control Instruments Manufacturing, NAICS 3345); 10 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Coordinates: Census geocoder: 37.773429947611,-121.967757174237 · JUL 2026
Employees (band): OSHA: 20-99 · DEC 2025

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