Manufacturing of parts and accessories for electricity and electrical signal indicating and recording instruments

Facility	City	State	Employees	Status
Micronix USA LLC	Fountain Valley	CA	20–99	● ACTIVE
National Electrostatics CORP	Middleton	WI	20–99	● ACTIVE
Nova Biomedical CORP	Waltham	MA	500+	● ACTIVE
Nova Measuring Instruments INC.	Fremont	CA	100–499	● ACTIVE
Pacific Instruments, INC.	Concord	CA	20–99	● ACTIVE
Parr Instrument Company	Moline	IL	20–99	● ACTIVE
Percival Scientific Incorporated	Perry	IA	20–99	● ACTIVE
Picarro, INC	Santa Clara	CA	100–499	● ACTIVE
Pine Test Equipment INC	Grove City	PA	—	● ACTIVE
Polarity INC.	Rancho Cordova	CA	20–99	● ACTIVE
Precision Filters, INC.	Ithaca	NY	20–99	● ACTIVE
Prime Technology LLC	North Branford	CT	20–99	● ACTIVE
QTQa Technology Company, INC.	Hampton	NH	20–99	● ACTIVE
Quantum Design, INC.	San Diego	CA	100–499	● ACTIVE
Resonetics LLC	Nashua	NH	100–499	● ACTIVE
RSRichard-allan Scientific LLC	Kalamazoo	MI	—	● ACTIVE
Sable Systems International, INC	North Las Vegas	NV	20–99	● ACTIVE
Sensorex Corporation	Garden Grove	CA	20–99	● ACTIVE
Siskiyou CORP	Grants Pass	OR	20–99	● ACTIVE
Spectron LLC	Ventura	CA	1–19	● ACTIVE
Teledyne Instruments INC	City of Industry	CA	20–99	● ACTIVE
Tempo Communications, INC.	Vista	CA	100–499	● ACTIVE
Trackonomy Systems INC	San Jose	CA	100–499	● ACTIVE
Trellisware Technologies INC	San Diego	CA	100–499	● ACTIVE
Unchained Labs, LLC	Pleasanton	CA	100–499	● ACTIVE

FactoryRegistry lists 2,305 facilities whose primary industry classification is one of the 2 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced parts and accessories for electricity and electrical signal indicating and recording 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.

The U.S. Census Bureau recorded this product line in 2 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 34 establishments reported producing it; the count for 1 of those industries was withheld.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2045230009. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.