Manufacturing of electrical indicating, recording, and other instruments to measure electricity, including indicator panels and portable electricity measuring instruments

Facility	City	State	Employees	Status
Wilcom INC	Meredith	NH	—	● ACTIVE
Yokogawa Corporation of America	Sugar Land	TX	100–499	● ACTIVE
4m Sigma Corporation	Seattle	WA	—	● ACTIVE
Ab Dynamics INC	Wixom	MI	—	● ACTIVE
Accel-rf Instruments Corporation	San Diego	CA	—	● ACTIVE
Acculogic LTD	Lake Forest	CA	—	● ACTIVE
Accusource Electronics, INC.	Gainesville	GA	—	● ACTIVE
Admiral Instruments, LLC	Tempe	AZ	—	● ACTIVE
Advanced Fiber Sensors INC	Ann Arbor	MI	—	● ACTIVE
Aea Technology, INC.	Vista	CA	—	● ACTIVE
Aimilight Sensors and Intelligent Systems INC.	Pittsburgh	PA	—	● ACTIVE
Aim-usa LLC	Trevose	PA	—	● ACTIVE
Airr Engineering, LLC	Mckinney	TX	—	● ACTIVE
AIAlcatera INC	Los Angeles	CA	—	● ACTIVE
AIAlltest Instruments, INC.	Farmingdale	NJ	—	● ACTIVE
American Valley Avionics & Calibration LLC	Orange Park	FL	—	● ACTIVE
Ametek INC	Grand Junction	CO	—	● ACTIVE
Amptec Research CORP	Austin	TX	—	● ACTIVE
Andeen-hagerling INC	Solon	OH	—	● ACTIVE
Arbin Corporation	College Station	TX	—	● ACTIVE
Arbin Instruments, INC.	College Station	TX	—	● ACTIVE
Arbiter Systems, INC.	Paso Robles	CA	—	● ACTIVE
Arcadia Test INC.	Fremont	CA	—	● ACTIVE
Arroyo Instruments, LLC	San Luis Obispo	CA	—	● ACTIVE
Ars Technical Sales CORP	West Boylston	MA	—	● ACTIVE

FactoryRegistry lists 819 facilities whose primary industry classification is one of the 1 industry above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced electrical indicating, recording, and other instruments to measure electricity, including indicator panels and portable electricity measuring instruments, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.